Pls help! will give brainlist!

Greg put a diagonal support across the back of a bookcase, as shown. What is the length, X, to the nearest 10th of a foot, of the diagonal support on the bookcase.

A. 4 feet
B. 8 feet
C. 6.5 feet
D. 5.8 feet

Over the last 8 nights, elyse earned the following in tips: {105, 120, 84, 95, 100, 132, 140}. if she earns $140 a night for the next four nights, which measure of center would increase more, the mean or median?

Aquadrilateral has exactly one pair of parallel sides. which name best describes the figure?

What is the next step in the given proof? choose the most logical approach. a. statement: m 1 + m 2 + 2(m 3) = 180° reason: angle addition b. statement: m 1 + m 3 = m 2 + m 3 reason: transitive property of equality c. statement: m 1 = m 2 reason: subtraction property of equality d. statement: m 1 + m 2 = m 2 + m 3 reason: substitution property of equality e. statement: 2(m 1) = m 2 + m 3 reason: substitution property of equality