Question

The cost of having someone come to your house and clean for x number of hours is represented by the

function f(x)= 35x. How much will it cost if the person took 4 hours to clean your house?

Answer 1

$140

Explanation:

When a variable is placed directly after the coefficient (the number) with no symbols between them, we are supposed to multiply the two together. The variable x represents the number of hours this person will spend cleaning your house, and we are trying to find the cost of 4 hours of cleaning. Therefore, we will substitute 4 for x:

`f(x) = 35x \\ f(x) = 35(4)`

Then, we multiply 35 by 4:

`f(x) = 35(4) \\ f(x) = 140`