Mr. Lewis fixes electronic equipment. He uses the function f(x) = 80x + 250 to determine his total charge, f(x), in dollars, where x is the number of hours he works. Which statement represents the rate of change of the function?

Given:

Total charge, f(x), in dollars, for x number of hours is

To find:

The correct statement for the rate of change of the function.

Solution:

Slope intercept form of a linear function is

     ...(i)

where, m is slope and b is y-intercept.

We have,

      ...(ii)

On comparing (i) and (ii), we get

Therefore, the slope or rate of change of the function is 80 and it represents that per hour changes are 80.

typically if you want , you would actually put questions here for us to you. but hey, that's just me. maybe someone will magically answer the questions for you without knowing what they are.

let's solve your equation step-by-step.

4x+2=2x+12

step 1: subtract 2x from both sides.

4x+2−2x=2x+12−2x

2x+2=12

step 2: subtract 2 from both sides.

2x+2−2=12−2

2x=10

step 3: divide both sides by 2.

2x

2

=

10

2

x=5

step-by-step explanation: