Let x = number of problems on test
If he got 14 wrong, then x - 14 is the number correct.

x - 14 = .72x
.28x - 14 = 0
.28x = 14
x = 50
The test consisted of 50 problems.
Answer:
I think that the answer is 10
Answer:
X=5
mde=e
mef=5
mdfg=77
Step-by-step explanation:
Answer:
1/25 k^2
Step-by-step explanation: