Question

A person purchased 5k + 2 items for a total cost of 35k ^2 + 29k + 6. Find the average cost per item of this purchase.

a.7k + 3
b.3k + 7
c.3k + 4

Answer 1

$average \: cost = \frac{totalcost}{no \: of \: items} \\ = \frac{3 {k}^{2} + 29k + 6}{5k + 2} \\ = \frac{(7k + 3)(5k + 2)}{5k + 2 } \\ = 7k + 3$

Answer 2

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