Is x=-5 a solution of 2x-(3x-15)=-10

Labc is reflected across x = 1 and y = -3. what are the coordinates of the reflection image of a after both reflections?

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.

A6 ounce bottle of dressing costs $1.56 a 14 ounce bottle costs $3.36 a 20 ounce bottle costs $5.60 which has the lowest cost per ounce