Mary purchased 4 tires by mail order. She paid $63.80 per tire plus $4.20 per tire for shipping and handling. There is no sales tax, because the tires were purchased out of state. She also had to pay $7.41 per tire for mounting and balancing. At a local store, Mary's total for the 4 tires with mounting and balancing would be $356 plus 6% sales tax. How much did Mary save by purchasing the tires through the mail?

tickets for the harlem globetrotters

show at michigan state university in

2010 cost $16, $23, or, for vip seats, $40.

total revenue = 16x + 23y + 40z

if 9 times as many $16 tickets were sold

as vip tickets,

x = 9z => x – 9z = 0, if 9 times as many $16 tickets were sold

as vip tickets,

x = 9z => x – 9z = 0, sales of all three kinds of tickets would

total $46,575.

16x + 23y + 40z = 46575, how many of each kind of ticket would

have been sold?

solve for x, y and z

x − 9z = 0

x − y − z = 55

16x + 23y + 40z = 46575

x = 1170

y = 985

z = 130

welcome!

f

step-by-step explanation:

f