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ElizabethF
03.08.2019 •
Mathematics
Efrain must spend less than $80 on his phone bill this month. he pays a monthly fee of $16, plus an additional $4 for each long-distance call. 4x + 16 < 80 how may long-distance calls can efrain make this month? a. x< 16 b. x< 48 c. x< 4 d. x< 64
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Ответ:
4x < 80 - 16
4x < 64divide both sides by 4
x < 64/4
x < 16 <===
Ответ: