Question

Initially, there were only 86 weeds in the garden. The weeds grew at a rate of 29% each week. The following function represents the weekly weed growth: f(x) = 86(1.29)x. Rewrite the function to show how quickly the weeds grow each day.

f(x) = 86(1.04)x; grows approximately at a rate of 0.4% daily
f(x) = 86(1.04)7x; grows approximately at a rate of 4% daily
f(x) = 86(1.29)7x; grows approximately at a rate of 20% daily
f(x) = 86(1.297)x; grows approximately at a rate of 2% daily
(Its C all the answers to this question is wrong so I would try C sense questions related to this problem had the function as this f(x) = 86(1.29)7x)

Answer 1

Explanation:

You are given the WEEKLY growth...divivde the RATE by SEVEN to find the DAILY growth

f(x) = 86 (1.29)^x

rate = 29% 29% / 7 = ~ 4% (approx daily growth rate) )

the equation then becomes 86 ( 1.04)^(7x)

the second choice