Answer:
B is the right answer
Step-by-step explanation:
Subtract 14 from each side to get the value of m
21 - 14 = 7 = m
m = 7
3 hours worked - $19.50
0.5 hours - x
x= 0.5(19.5)/3
x=3.25
and then do the same for the other cases
20%
18/90=.2
.2 as a percentage is equal to 20%.