Add. Your answer should be an expanded polynomial in standard form. (d^2+6d+9) +(d^3+6d+9)=

d^3 + d^2 + 12d + 18

Step-by-step explanation:

(d^2 + 6d + 9) + (d^3 + 6d + 9) =

First, step is to drop the parentheses since they are not needed.

= d^2 + 6d + 9 + d^3 + 6d + 9

Now, like terms together.

= d^3 + d^2 + 6d + 6d + 9 + 9

Add like terms.

= d^3 + d^2 + 12d + 18

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: