The angle measures 42°, 50°, 130°, and 138° are written on slips of paper. You choose two slips of paper at random. What is the probability that the angle measures are supplementary? Enter your answer as a fraction.

WILL MARK YOU

Astudent simplified a rational expression as shown.

F(x) = x2 − 9, and g(x) = x − 3 f(x) = x2 − 4x + 3, and g(x) = x − 3 f(x) = x2 + 4x − 5, and g(x) = x − 1 f(x) = x2 − 16, and g(x) = x − 4 h(x) = x + 5 arrowright h(x) = x + 3 arrowright h(x) = x + 4 arrowright h(x) = x − 1 arrowright

If x = -2, then x 2-7x+10 equals a. 0 b.20 c.28