Answer:
$3 sales tax
$63 total cost
Step-by-step explanation:
5% of 60 is 3, so that'd be 60 + 3 which is 63, or $63
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First arrange numbers
14,15,15,17,19,20,21,23,24
19 is median
15+15/2=15 is first quartile
0.15p , p < $900
C(p) = 0.17p, $900 < p < $1,500
0.21p, p > $1,500