Answer:
4 (3+x)
Step-by-step explanation:
4 (3+ x) = (4×3) + (4× X ) = 12 + 4x
Start with the given expression:

.
Simplify by grouping like terms:

Isolate variable terms:

Solve for x:


Therefor the expression holds for integers less than or equal to 14.
As a check:



TRUE
and:



FALSE
The only choice that fits is
A.
COS = Adjacent / Hypotenuse
CosZ = 24/30