21 and 22 because 21+22=43
Here's the slope form; (y2- y1) / (x2 - x1)
All you have to do now is just plug in the number into the formula.
(6 - -4) / (6 - 1) = 10/5
Then divide, and the answer is D. 2.
Because supplementary angles means mA + mB = 180.
Then subtract 80 from 180 which will get you 100.
So B = 100
20 minutes 60minutes ÷ 30miles = 20minutes
