Rectangualr prism solid figure can be made woth more than 1 shape

Let's solve for x:
100x=1000
Divide by 100
x=10
You should expect to win 10 times.
I think its a. but i could be wrong
Answer:
Step-by-step explanation:
7x - 15 = 4x - 12
3x - 15 = -12
3x = 3
x = 1
y = 7(1) - 15
y = 7 - 15
y = -8
(1, -8)