Answer:
Step-by-step explanation:
<u>Money spent:</u>
y = -5x +7
slope intercept form of the equation is
y= mx+b
where m is the slope and b is the y intercept
Yes, (-3, -9) is a solution.
y = 3x (-3,-9)
-9 = 3(-3)
-9 = -9
$3.90
its B
