When using substitution method to solve the following system of equations, what is the result of the first step ? x +2y=5 y=6x+3

Country carpets charges $22 per square yard for carpeting, and an additional installation fee of $100. city carpets charges $25 per square yard for the same carpeting, and an additional installation fee of $70

Ade and abc are similar. which best explains why the slope of the line between points a and d is the same as the slope between points a and b?

Ineed to find the answer to number 2