Graph the equation y + x = 14

I need help plz

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

God's gym charges a sign-up fee of $100 plus $30 per month. write an expression to represent how much someone would pay for a membership.

Joe bought 4.25 pounds of pears for $7.18. if the equation 4.25x = 7.18models the situation, what does the variable stand for?