Answer:
$55
Step-by-step explanation:
Let b represent the original bill. The problem statement tells us ...
20% × (b -6) = 9.80
Dividing by 20% gives ...
b -6 = 49.00
b = 55.00 . . . . . . . add 6
Their bill before the discount was $55.00.
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<em>Comment on the tip</em>
It is generally considered better form to tip on the basis of the original bill before coupons and discounts.
Answer:
y=-30
Step-by-step explanation:
3y+24=2y-6
Answer:
It's B
Step-by-step explanation:
B, 16x2-9y2
Answer:
31
Step-by-step explanation:
ST + TU+ UV = SV
13+6+ 2x-18 = 4x-29
Combine like terms
2x+1 = 4x-29
Subtract 2x from each side
2x+1-2x = 4x-29-2x
1 = 2x-29
Add 29 from each side
1+29 = 2x-29+29
30 =2x
Divide each side by 2
30/2 = 2x/2
15 =x
We want to find the length of SV
SV = 4x-29
= 4*15-29
= 60-29
= 31