(2x + y = -2
(5x + 3y = -8
Solve by substitution

You are a clerk at convenience store. a customer owes 11.69 for a bag of potatoes chips. she gives you a five dollar bill. how much change should the customer receive?

Evaluate the expression for the given value of the variable. 5×(h+3) for h=7

If square root x = -7, then x= -49 true or false