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sergij07 [2.7K]
4 years ago
9

A certain mail service charges $15 for an overnight package, plus 18 cents per pound. Find the cost of mailing a 40-pound packag

e through this company.
Mathematics
1 answer:
Ksivusya [100]4 years ago
5 0
Cost = $15 + $ .18x

y = .18 (40) + 15
y = 7.2 + 15
y = 22.2

so the answer is $22.20 

check:

22.20 = .18x + 15
7.2 = .18x 
x = 40

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