Which ordered pair is the solution to the system of equations?
2x−y=−5
x+3y=22

a.(1, 7)
b.(4, 9)
c.(7, 19)
d.(8, 21)

Steve wants to develop a way to find the total cost of any item including sales tax. the sales tax in his city is 6%. his friend jenna writes the expression x + 6x where x is the cost of the item. explain whether her expression is correct based on the situation.

Which expression converts 45 degree to radians

Timmy uses 1 1 2 cups of sugar for every 2 gallons of lemonade he makes. how many cups of sugar would timmy use if he makes 13 gallons of lemonade?