Answer:
99
Step-by-step explanation:
180-123=57
180-57-42=81
180-81=99
50
42+123=165
165+50=215
215+145=360
A) y = -5/8x + 6
y2 - y`1 / x2 - x1
7/2 - 11 / 4 - (-8)
-15/2 / 12
= -5/8
y = -5/8x + b
11 = -5/8(-8) + b
11 = 5 + b
6 = b