180°-100°= 80° (angle 1)
180°-150°= 30° (angle 2)
180°-80°-30°= angle 3
angle 3 = 70°
∴ the interior angles are 80°, 30° and 70°
Answer: a. 
Step-by-step explanation:
You can plug in the x and y values to get
Answer:
15 sides
Step-by-step explanation:
Interior angle = {n - 2}{180/n}
156 = {n - 2}{180/n}
Cross multiply
156n = {n - 2}180
156n = 180n - 360
180n - 156n = 360
24n = 360
n = 369/24
n = 15
Point slope form is y=mx+b. m is slope and b is the y intercept (where it crosses the y axis). So far we have y=2x+b. Because it crosses the origin (0,0) the y intercept is 0. So we just write y=2x
429 estimates to either 250 or 230. So 250 x 5 = 1250 And 230 x 5 = 1150
