NZ Level 6 (NZC) Level 1 (NCEA)
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Growth and Decay

Interactive practice questions

Consider the function $y=0.68\left(1.6\right)^x$y=0.68(1.6)x.

a

Identify what type of function this is:

Exponential growth

A

Exponential decay

B

Exponential growth

A

Exponential decay

B
b

What is the rate of growth?

Easy
Approx a minute
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Consider the function $y=0.98\left(0.2\right)^x$y=0.98(0.2)x.

The local rodent population, numbering approximately $840$840, is decreasing at a rate of $4%$4% per year.

Justin purchased a piece of sports memorabilia for $\$2900$$2900, and it is expected to increase in value by $9%$9% per year.

Outcomes

NA6-3

Apply everyday compounding rates

91026

Apply numeric reasoning in solving problems

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