a. 30 b. 60 c. 13
Work Step by Step
a. $C=10h+20$ $h=1$ $C=10(1)+20$ $C=10+20$ $C=30$ b. $C=10h+20$ $h=4$ $C=10(4)+20$ $C=40+20$ $C=60$ c. $C=10h+20$ $C=150$ $150=10h+20$ $130=10h$ $h=13$
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