Two separate questions

3(5x) - 6x = 27

3(2x) + 8(-4x) = 57 + 47

v: l•w•h÷2.

v: 20•6•8 ÷2

v: 960÷2

v: 480

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:

not sure but it may be b, as i said i'm not sure.

c

step-by-step explanation: