Help me 1 to 5 please show work please

10k^2-9k-14

Step-by-step explanation:

(7k^2+2k-6)+(3k^2-11k-8)

7k^2+2k-6 + 3k^2-11k -8       Just add/subtract

10k^2-9k-14

answer: a.   one is a factor of every whole number since every number is divisible by itself.

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: