Question

The function

Answer 1

Answer:

a) increase by 4%

b) $ 98.54

Step-by-step explanation:

The given function is

$c(x) = 72 \times (1.04) ^{x}$

We can rewrite this function as

$c(x) = 72 \times (1 + 4\%) ^{x}$

Therefore the cost of the chemical increase over time by 4%

b) We want to find how much an ounce of the chemical cost in 2018.

Since 2010 to 2018, 8 years have passed.

We substitute x=8 to get:

$f(8) =72 {(1.04)}^{8}$

$f(8) =98.54$