Which sum or difference is modeled by the algebra tiles? A.
(-x2 − 2x + 4) − (x2 + 2x + 1) = -2x2 − 4x + 3
B.
(-x2 − 2x + 4) + (-x2 − 2x + 1) = -2x2 − 4x + 3
C.
(-x2 − 2x + 4) − (x2 − 2x − 1) = -2x2 − 4x + 3
D.
(-x2 − 2x + 4) + (-x2 + 2x + 1) = -2x2 − 4x + 3

For a field trip to the zoo, 4 students rode in cars and the rest filled nine busess. how many students were in each bus if 472 students were on the trip

1.two more than the quotient of a number and 6 is equal to 7 use the c for the unknown number translate the sentence into an equation

Twenty points. suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet