1. How much greater is -20x^7-15x^6-14 than 5x^7-5x^2-10

2. How much greater is -15x^2+14x-6 than 16x^2-15x+14

PLEASE HELP ME IM DESPERATE!!! 30 POINTS

How many sides does a regular polygon have if each exterior angle measures 72a.3b.4c.5d.6

Suppose a gym membership has an initial enrollment fee of $75 and then a fee of $29 a month. which equation models the cost, c, of the gym membership for m months?

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ac=26 and ch=8, find bh.