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.
We want to find the amount of books each 6th grader would need to read, so we would use division for this problem:
3072 books / 96 sixth-graders
3072/96=32
Each 6th grader would have to read 32 books.
(16a^6b^8-24ab^9)/4a^6b^8
(4-6ab^1)/a^6b
Hope this helps :)
<span>the answer is C: Lara should have only divided the side lengths by 2 in order to reduce the triangle.</span>
