Answer:
The answer to your question is: V = 5x² + 40x + 80
Step-by-step explanation:
Formula = V = r²h
r = x + 4
h = 5
Substitution
V = (x + 4 )² 5
V = (x² + 8x + 16)5 expand
V= 5x² + 40x + 80 simplify
(x + 2)(- 8x + 1) are your factors.
Answer: the price of each CD before tax is $14.9
Step-by-step explanation:
Let x represent the price of each CD before tax.
Abdul bought 3 CDs that were each the same price. It means that the total cost of the 3 CDs before tax is $3x.
Including sales tax, he paid a total of $47.40. Of that total, $2.70 was tax. It means that
3x + 2.7 = 47.4
3x = 47.4 - 2.7
3x = 44.7
x = 44.7/3
x = 14.9
the price of each CD before tax is $14.9
Answer:
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