Lucas received $35 from his friend for his birthday. He wants to purchase a new keyboard that is $19 and wants to spend the rest on a monthly subscription for computer games. The monthly subscription costs $5 per month. What is the max number of months that Lucas can pay for?

3 months

Step-by-step explanation:

  35

-  19

=  16     left after keyboard

-  15     Three months of subscription costs

step-by-step explanation:

12475909

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: