Aservice center charges a fee of x dollars for an oil change plus y dollars per quart of oil used. write a system of linear equations that represents this situation.

Suppose a store sells an average of 80 cases of soda per day. assume that each case contains 24 cans of soda and that the store is open 10 hours per day. find the average number of soda that the store sells per hour.

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25

Which equation can be used to measure the density of water in a spherical water tank? let w represent the number of water particles within the region.