Let f(x)=7x3−2x−12and g(x)=−3x3−8x2+10x what is the function rule for (f+g)(x) ? a. (f+g)(x)=4x6−8x2+12x−12 b. (f+g)(x)=4x6−8x2+8x−12 c. (f+g)(x)=4x3−8x2+8x−12 d. (f+g)(x)=4x3−12x2+8x−12

what is all that apply?

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: