Answer:11+2x
Step-by-step explanation:
(10-7-x)+(4+4+3x)
3-x+8+3x
3+8+3x-x
11+2x
It would cost $4.50 to purchase 2 books.
Answer:
84
Step-by-step explanation:
Combinations
nCr
n (objects) = 9
r (sample) = 3
9C3
n! / r! (n – r)!
9! / 3! (9 – 3)!=
9! / (3! * 6!)=
9*8*7*6!/ (3! * 6!)=
6! cancels out
9*8*7/3*2*1=
3*4*7=
12*7=
84
A 3rd degree polynomial of any sort times a 4th degree polynomial of any sort will result in a 7th degree polynomial.

The answer is 10
because when you have a triangle it only half of a full square so on the left triangle its 2 because the full square would be four. then the box would be 4 and the triangle on the right would be four
4 + 4 +2 = 10
HOPE THIS HELPS :D