If alex buys 4 lizards at 25% off and each lizard cost g dollars, write an expression that shows their total.

total = 3g

Step-by-step explanation:

if 25% off then he paid 100% - 25% =  75%

if original costs g dollars,

total cost  = 4 ( g * 75% )

              =  4 ( g * 75/100 )

              = 3g

so total cost is 3g dollars

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:

good job you smart son of a gun you are smarter that einstein. 7