Answer:
C. 3x = 13.5
Explanation:
To find which equation has a solution of x = 4.5, we must input 4.5 in each equation in for x.
A. 7 - 4.5 = 3.5
This is untrue, as 7 - 4.5 is 2.5, not 3.5
B. 2 (4.5) = 10
This is untrue, as 2 x 4.5 is 9, not 10
D. 4.5 + 4 = 4.9
This is untrue, as 4.5 + 4 is 8.5, not 4.9
C. 3 (4.5) = 13.5
This is true, because 3 x 4.5 is 13.5!
I hope this helps.