Answer:
$0.22/inch
Step-by-step explanation:
6 ft = 72 inches
15.84/72 =0.22
x = 7.5
Proportions:
5 x
_ = _
6 9
11.25
15x3/4=45/4=11.25pounds
C.
x^2+20^2=25^2
x^2+400=625
x^2=225
x=15