Janay paid $168 for 42 sandwiches for the class picnic. What is the unit rate in dollars for each sandwich?
1 answer:
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Answer:
y = 5
Step-by-step explanation:
Expand the logarithm:
_____
You can also take the antilog first:
5y = y²
y(y -5) = 0 . . . . . subtract 5y, factor
y = 0 or 5 . . . . . y=0 is not a viable solution, so y=5.