Write and solve an equation to find the value of the variable 104,137,154,131,x; mean=130

This question awards 100 ! i really don’t want to fail i will also mark you !

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1

Susie wants to take her friend out for lunch.she wants to spend $9.75 each person. how much will she spend in all.