Answer:
17%
Step-by-step explanation:
99.45-85=14.45
14.45/85= 0.17
0.17= 17%
Answer: 
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Work Shown:

Explanation: I replaced every x with h(x) in step 2. In step 3, I replaced h(x) with 2x+5 just on the right hand side only. From there, expand and simplify.
25 is a perfect square, the square root of 25 = 5 because 5 * 5 = 25
180 = 2n + 128
2n = 52
n = 26°
180 - 128 = 52
90 + 52 + m = 180
142 + m = 180
m = 38°
Answer: n = 26° and m = 38°