Answer:
A
Step-by-step explanation:
the y intercept (where x is 0) should be -3 because of y<3x-3
2x+10y-2.8x-5.2y+16=
-0.8x+4.8y+16
We can use the is/of=p/100 method for this problem. Since it's 15% off, this would mean that the bill is 85% of what it was initially. Plug the values into the is/of=p/100 formula.
36.72/x = 85/100
Solve for x.
x=36.72/0.85
x=43.2
So, the bill was $43.20 before applying the voucher discount of 15% off.
