robert7248
10.04.2021 •
Mathematics
Will mark brainlist!! help please
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Ответ:
It is the 3rd one 9/5y+9.
Ответ:
5 lbs
Step-by-step explanation:
1) x = lbs. of coffee at $7 per lb
2) (7)(x) + (4)(10) = (5)(x + 10)
3) 7x + 40 = 5x + 50
7x - 5x = 50 - 40
2x = 10
x = 5 (lbs. of coffee at $7 per lb.)