Answer:
$385
Step-by-step explanation:
7 but im not sure
z= 104
y=76
x=76
z+76= 180. solve for z
z=x
$100 rebate
$479.99-$100.00= $379.99 or $479.99-20% =$383.99 so the $100.00 rebate a better offer
X Y
--------
1 0.50
2 0.25
3 0.13
4 0.06
5 0.03