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:
Yes, 5+5=10
Step-by-step explanation:
The SI system is the Internation System of Units which contains kg, liters, cm, etc.
The answer is 10. Example: meters and decimeters, decimeters to centimeters, centimeters to millimeters
(b-2)(b-2)(b^2+4)
= (b^2-4b+4)(b^2+4)
= b^4-4b^3+8b^2-16b+16
