Amechanic charged $220.28 to repair a car. the price included charges for 3 hours of labor and $126.53 for parts.

how much does the mechanic charge per hour, d, for labor?

solve for d.

The mechanic charges $31.25 per hour

A linear equation is given by:

y = mx + b;

where m is the rate of change, y, x are variables and b is the y intercept.

Since $220.28 is charged to repair a car. The price included charges for 3 hours of labor and $126.53 for parts. Let d represent the mechanic charge per hour, hence:

220.28 = 3d + 126.53

3d =93.75

d = $31.25 per hour

Hence the mechanic charges $31.25 per hour

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x + 107

step-by-step explanation:

let's say that the number he had before the mistake was x. then, he will have 107 dollars more than this, so the answer is x + 107.

i think the answer is b.

step-by-step explanation:

not 100% sure though.