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Exponential Growth, Decay & Compound Interest — Easy Worksheet 2
Grade 11 · MathSheets Name: ____________________ Date: __________
Solve each problem. Round money to the nearest cent unless told otherwise.
How to solve
In y = a(b)t, a base b > 1 means growth by (b - 1) and a base 0 < b < 1 means decay by (1 - b), written as a percent. For compound interest use A = P(1 + rn)nt with n compoundings per year, or A = Pert for continuous compounding. Always write the rate r as a decimal (5% = 0.05).
Example
Does y = 400(1.2)t show growth or decay, and by what percent per period? Answer like: growth, 4%
Answer: growth, 20%
✓ Correct!
Not quite. The answer is
💡 How to solve: Exponential Growth, Decay & Compound Interest
In y = a(b)t, a base b > 1 means growth by (b - 1) and a base 0 < b < 1 means decay by (1 - b), written as a percent. For compound interest use A = P(1 + rn)nt with n compoundings per year, or A = Pert for continuous compounding. Always write the rate r as a decimal (5% = 0.05).
Try a similar one
Does y = 120(1.1)t show growth or decay, and by what percent per period? Answer like: growth, 4%
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
✓ Correct!
Not quite. The answer is
💡 How to solve: Exponential Growth, Decay & Compound Interest
In y = a(b)t, a base b > 1 means growth by (b - 1) and a base 0 < b < 1 means decay by (1 - b), written as a percent. For compound interest use A = P(1 + rn)nt with n compoundings per year, or A = Pert for continuous compounding. Always write the rate r as a decimal (5% = 0.05).
Try a similar one
Does y = 120(1.03)x show growth or decay, and by what percent per period? Answer like: growth, 4%
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
✓ Correct!
Not quite. The answer is
💡 How to solve: Exponential Growth, Decay & Compound Interest
In y = a(b)t, a base b > 1 means growth by (b - 1) and a base 0 < b < 1 means decay by (1 - b), written as a percent. For compound interest use A = P(1 + rn)nt with n compoundings per year, or A = Pert for continuous compounding. Always write the rate r as a decimal (5% = 0.05).
Try a similar one
Does y = 50(1.04)t show growth or decay, and by what percent per period? Answer like: growth, 4%
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
✓ Correct!
Not quite. The answer is
💡 How to solve: Exponential Growth, Decay & Compound Interest
In y = a(b)t, a base b > 1 means growth by (b - 1) and a base 0 < b < 1 means decay by (1 - b), written as a percent. For compound interest use A = P(1 + rn)nt with n compoundings per year, or A = Pert for continuous compounding. Always write the rate r as a decimal (5% = 0.05).
Try a similar one
Does y = 400(0.94)t show growth or decay, and by what percent per period? Answer like: growth, 4%
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
✓ Correct!
Not quite. The answer is
💡 How to solve: Exponential Growth, Decay & Compound Interest
In y = a(b)t, a base b > 1 means growth by (b - 1) and a base 0 < b < 1 means decay by (1 - b), written as a percent. For compound interest use A = P(1 + rn)nt with n compoundings per year, or A = Pert for continuous compounding. Always write the rate r as a decimal (5% = 0.05).
Try a similar one
Does y = 3000(0.95)t show growth or decay, and by what percent per period? Answer like: growth, 4%
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
✓ Correct!
Not quite. The answer is
💡 How to solve: Exponential Growth, Decay & Compound Interest
In y = a(b)t, a base b > 1 means growth by (b - 1) and a base 0 < b < 1 means decay by (1 - b), written as a percent. For compound interest use A = P(1 + rn)nt with n compoundings per year, or A = Pert for continuous compounding. Always write the rate r as a decimal (5% = 0.05).
Try a similar one
Does y = 250(0.92)x show growth or decay, and by what percent per period? Answer like: growth, 4%
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
✓ Correct!
Not quite. The answer is
💡 How to solve: Exponential Growth, Decay & Compound Interest
In y = a(b)t, a base b > 1 means growth by (b - 1) and a base 0 < b < 1 means decay by (1 - b), written as a percent. For compound interest use A = P(1 + rn)nt with n compoundings per year, or A = Pert for continuous compounding. Always write the rate r as a decimal (5% = 0.05).
Try a similar one
Does y = 800(0.65)x show growth or decay, and by what percent per period? Answer like: growth, 4%
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
✓ Correct!
Not quite. The answer is
💡 How to solve: Exponential Growth, Decay & Compound Interest
In y = a(b)t, a base b > 1 means growth by (b - 1) and a base 0 < b < 1 means decay by (1 - b), written as a percent. For compound interest use A = P(1 + rn)nt with n compoundings per year, or A = Pert for continuous compounding. Always write the rate r as a decimal (5% = 0.05).
Try a similar one
Does y = 50(1.03)t show growth or decay, and by what percent per period? Answer like: growth, 4%
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
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Exponential Growth, Decay & Compound Interest — Easy Worksheet 2
Solve each problem. Round money to the nearest cent unless told otherwise.