Leah wants to save money on a new computer. The computer she wants is listed at a regular price of $400.00. This Saturday, the store will be offering the computer at a discount of 30% off. If you shop
before 9:00am, the store will give you an additional 10% off the sales price. How much will Leah pay,
without tax, when she buys the computer that Saturday before 9:00am?
A. $148.00 B. $160.00
C. $240.00
D. $252.00

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations: