So pretty much, 4g is 4 times g right? taking this into consideration, replace g with x1 and h with x4. Then you get 4 x 1 + 5 x 4. Since you're always supposed to multiply and then add (left to right), it would equal 4 + 20 which is 24. Good luck on your test.
<u>D. 85 ((: </u>
40 + 55 = 95 then you would do 180 - 95 = 85
all triangle equal 180 ((: