4(5x-20)= -20
20x-80= -20
+80 +80
____________
20x=60
_______
20
x=3
3 over 8 plus 2 over 3 plus 1 over 3 = 11 over 8 or 1.375
In standard form, zero is always on the right:
y = 12 - x^4
y + x^4 - 12 = 0
End behavior:
As x approaches ∞, y approaches -∞
As x approaches -∞, t approaches -∞
$9.47
I just multiplied the total by the refund percentage to get that number. It’s just like finding a tip.
