In the literal equation below, what do c and f represent? f = 9/5 c + 32

Question: what is the value of x 4x-2= (-7) +5x. it would be greatly appreciated if someone could actually explain to me step by step

Atriangle with all sides of equal length is a/an triangle. a. right b. scalene c. equilateral d. isosceles

Given: △acm, m∠c=90°, cp ⊥ am , ac: cm=3: 4, mp-ap=1. find am.