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Lapatulllka [165]
3 years ago
6

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). Rewrite the function to show how quickly the weeds grow each day.
A.f(x) = 86(1.04)*; grows approximately at a rate of 0.4% daily

B.f(x) = 86(1.04)7%, grows approximately at a rate of 4% daily

C.f(x) = 86(1.29)7%; grows approximately at a rate of 20% daily

D.f(x) = 86(1.297); grows approximately at a rate of 2% daily​
Mathematics
1 answer:
Dmitry [639]3 years ago
8 0

Answer:

Option A. f(x)=86[1.04]^{x} ; grows approximately at a rate of 0.4% daily

Step-by-step explanation:

we have

f(x)=86(1.29)^{x}

where

f(x) the number of weeds in the garden

x ----> the number of weeks

Calculate how quickly the weeds grow each day

Remember that a week is equal to seven days

so

f(x)=86(1.29)^{\frac{x}{7}}

Using the law of exponents

b^(x/a) = b^(x*(1/a)) = (b^(1/a))^x

so

f(x)=86[(1.29)^{\frac{1}{7}}]^{x}

f(x)=86[1.04]^{x}

therefore

The rate is approximately

1.04=1+r

r=1.04-1=0.04=4% daily

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