Find the scale factor of the dilation. then tell whether the dilation is a reduction or and

Sole with work in 10 years, the average number of hours of tv watched per week by teenagers dropped from 23.9 to 21.4. find the percent of change.

!! 10 ! a westbound jet leaves central airport traveling 635 miles per hour. at the same time, an eastbound plane departs at 325 miles per hour. in how many hours will the planes be 1900 miles apart?

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2