4. The table below represents the number of hours a student worked and the amount of money the student earned.
Number of Dollars
Hours (h) Earned (c)
8 $50.00
15
$93.75
19
$118.75
30
$187.50
Which equation represents the number of dollars, d, earned in terms of the number
of hours, h, worked?

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,

the easiest way to do these would be to solve the equations. if you can solve the equation than you can solve these problems.