Which number could not be value of x
A.8
B.9
C.12
D.21

If jm equals 5x -8 and lm equals 2x -6 which expression represents jl

Ten members of balin's soccer team ran warm ups for practice. each member ran the same distance. their combined distance was 5/6 of a mile. to find the distance that each member ran, balin wrote the expression below.

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1