To solve for C, you have to get both of the numbers with a C on the same side. So, subtract the 5c from the right side onto the left side.

Then, divide by 3 on each side.

So, c = 7.
Answer:
50
Step-by-step explanation:
40 x 5280 = 211200 feet per hour
211200 / 3600 = 58.666 = 59 feet per second
X=5 if that's what you were asking for
Answer:
-10
Step-by-step explanation:
-(x-5) ^2+25
-x+5^2+25
-5 -5
-x^2+20
-2x+20
---- ----
-2 -2
x=-10
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