I think it is A. not sure though
Answer:

Step-by-step explanation:

→ Make a common denominator

→ Simplify

→ Convert into mixed number

Answer:
186.2 in^2
Step-by-step explanation:
7*9.5*2.8=186.2
Let

Then

and solving for x gives






By the quadratic formula,

but x must be a positive number, so only the positive square root solution is valid.

We identify a = c = 3 and b = 2, so a + b + c = 8.