A4500 square foot roll of plastic wrap costs $23.95. if 120 square feet is need for a party game, what is the monetary value of that 120 square foot piece of plastic wrap?

For this case, the first thing to do is define a variable.

We have then:

We write now the proportion that models the problem.

We have then:

From here, we clear the value of x.

We have then:

Calculating we have:

the monetary value of that 120 square foot piece of plastic wrap is:

it's

for this pair of functions g(x)=x-2 and f(x)=|x| is (g o f)(a)= |a| -2

step-by-step explanation:

g(x)=x-2

f(x)=|x|

(g o f)(a)=?

(g o f)(x)=g(f(x))

(g o f)(x)=g(|x|)

(g o f)(x)=|x|-2

(g o f)(a)=|a|-2