If f(1) = 160 and f(n + 1) = -2f(n), what is f(4)?

Parabolas y=−2x^2 and y=2x^2+k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.

Aline segment is different from a line in that a segment has

The percent of change from 12 to 15