It costs $45 for 3 xylophones and 3 yo-yo's. If you purchased 5 xylophones an 6 yo-yo's, it would cost $80. Set up a system of equations and solve for the
cost of a single xylophone and a single yo-yo.

439400

step-by-step explanation:

130^2 = 16900

16900*26 = 439400

the f

last graph i believe

step-by-step explanation:

worked it out i believe

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.