The equation is in standard form. Standard form is in this formula:
Ax + By = C
To convert a standard form to slope intercept form you first move Ax to the other side of the equation by inverse operations.
2x + 1.50y = 15
-2x -2x
1.50y = -2x + 15
You then divide B (From By) across the whole equation. (If you can't evenly divide make it a fraction)
1.50y = -2x + 15
1.50 1.50
y = -2/1.50x + 10
For a, x = 6 (3+6=9) and for b, y=5 (2x5=10)
Answer:32 hours
Step-by-step explanation: 37.5 hrs X 12.50 = 468.75
12.50+2.50 = 15
15x 31 = 465 ( just under what she made)
15x32= 480 ( what she made and some)