12 Select ALL the correct answers.
Observe the expression below and select the true statement(s).
3y(7 + 2x) + 9xy - 10
The "2" in the first term is a constant.
The "x" in the second term is an exponent.
The "(7 + 2x)" in the first term is a factor.
The "10" in the third term is a coefficient.
The "9" in the second term is a coefficient
The "3y' in the first term is a factor

answer: 1) twenty-seven times y

              2) twenty-seven multiplied by y

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:

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

15 batches are the most you can make

step-by-step explanation: