For the function f (x) = 3 (x + 7), find -1().

Given:

The function is .

To find:

The function .

Solution:

We have,

Substitute f(x)=y.

Interchange x and y.

Divide both sides by 3.

Taking power 4 on both sides.

Subtract 7 from both sides.

Substitute .

Therefore, the correct option is C.

step-by-step explanation:

there's the chart

answer: hence, function will be

explanation:

since we have given that

cost of a new textbook = $85

according to question, the resale value of a textbook decreases by 25% with each previous owner,

so, our function becomes,

here, y is the total value of the text book after x owners.

hence, function will be