Answer:
$61.59
Step-by-step explanation:
1 shirt = $20.53
3 shirts x $20.53 = $61.59
to check:
$61.59 ÷ 3 shirts = $20.53 each
There are 60 minutes in an hour and percent means per one hundred so:
p/100=18/60
p=1800/60
p=30%
It is a straight line of positive gradient that passes through the origin