Question

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A population of 470 animals decreases at an annual rate of 12%.

a.f(x)=470(1.88)x

b.f(x)=470(0.12)x

c.f(x)=470(0.88)x

d.f(x)=470(1.12)x

Answer 1

• C. f(x) = 470(0.88)ˣ

Explanation:

• Initial number = 470
• Decrease rate = 12% ⇒ 100% - 12% = 88% ⇒ 0.88 times

Required equation:

• f(x) = 470(0.88)ˣ

Correct choice is C