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M=12x

M= 12x + 3(x-30)

510= 12x+3(x-30)

Step-by-step explanation:

IN order to calculate how much will he make a week you just have to multiplicate the number of hours which is represented by X by the amount that he makes an hour.

To calculate the money earned by Evan in a wekk including the extra hours worked you just multiply the amount of hours worked a week, by the base price of the hour worked, which would be 12, then you just multiply the difference of 3 dollars, between regular to extra hours, and then multiply that by the difference between hours worked minus 30 hours which would be the amount of hours that he worked extra.

IN order to calculate the amount of hours that he worked you just clear the equation:

So if he worked 40 hours, he worked 30 regular and 10 extra.