When Shanaje baby-sits her nephews, she charges $8 plus $4 per hour. If Shanaje is paid $20, which equation would she use to find “h” the number of
hours she worked?
F. 4h = 20 H. 4h + 8 = 20
G. 4h – 8 = 20 J. 8h +4 = 20

solve systems of equations by graphing. a system of linear equations contains two or more equations e.g. y=0.5x+2 and y=x-2. the solution of such a system is the ordered pair that is a solution to both equations. to solve a system of linear equations graphically we graph both equations in the same coordinate system

add 8+12 to get a simplified answer of 12r-20