15. Janet's car insurance payment decreases by $20 each year. Which expressions represent the total change in her payment, in dollars, after 5 years?
A. 20-20-20-20 - 20
B. 100
C5 • (-20)
D. 20. (-5)

An airplane is flying at an elevation of 5150 ft, directly above a straight highway. two motorists are driving cars on the highway on opposite sides of the plane, and the angle of depression to one car is 35 ̊ and to the other is 52 ̊. how far apart are the cars?