What? is this a question? or....is it not?
D. Infinitely many because the lines will never Intersect which means there are infinitely solutions
231 ------> 75
x ----------> 100
x= 100*231/75 =308
A - 2 1/2 = 1 1/2
Solve for A by adding 2 1/2 to both sides:
A = 1 1/2 + 2 1/2
A = 4
The answer is c. A = 4
Check: 4 - 2 1/2 = 1 1/2
