Simplify the expression. What classification describes the resulting polynomial?

(x2 + 7x) + (2x2 − 7x)

A.
linear monomial
B.
linear binomial
C.
quadratic binomial
D.
quadratic monomial

B i know im late like really late but B <3

Step-by-step explanation:

ha!

i just did this!

18. g

20. h 30 degree turn.

21. d 90 degree angles

and also 19 is a. a sphere not a cirlcle

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answer: input the dimensions of the room to be painted. click the button to calculate the amount of paint and man-hours needed for this job.

interior paint coverage depends on the brand of paint used. the coverage amount is listed on the label of the paint can. use this to adjust the values in the paint coverage section below. paint usually is applied at 350 to 400 square feet per gallon (primer at 200 to 300 square feet per gallon).

step-by-step explanation: