Solution: 137 / 2 = 68.5
LMP is 11 degress more so 68.5 + 11 = 79.5
NMP is 11 degrees less so 68.5 - 11 = 57.5
The formula for area of a trapezoid is

so you add up the bottom base (17) and the top base (3) to get 20.
you then take the sum of the bases (20) times the height (8) to get 160.
lastly, you take 160 ÷ 2 to get your final answer, which is 80 (:
F(x) = x^2 + 1
f(4) = 4^2 + 1 = 16 + 1 = 17
2*f(4) = 2 * 16 = 32
Easy
first term is n=1
so 10th term is n=10
5(10)+100=50+100=150
150 is 10th term