1+ [2+x] =9

A. X=7 or x = -11
B. X=5 or x= -9
C. X=4 or x= -8
D. X=6 or x= -10

Module 10 coordinate proof using slope and distance answers is quadrilateral abcd a parallelogram? explain how you know.

Agreeting card company can produce a box of cards for $7.50. if the initial investment by the company was $50,000, how many boxes of cards must be produced before the average cost per box falls to $10.50?

I'll give brainliest if you answer right : )