Answer:
21.80
Step-by-step explanation:
C is your answer
no
5x - 3 = 12
5x=12+3
x=15/5=3
x=3
substitute x with 7 to find if it is a solution :
5(7)-3=12
35-3 ≠12 ( so no 7 is not a solution)
A.
$9.50
210x
