If the length, in feet, of the first room is (2x+7) and the length, in feet, of the second room is (2x - 1). which expression models the area, in square feet, of the new room once the wall is knocked down? A. 6x +12
B. 4x2+18
C. 4x^2+ 13x - 4
D. 4x^2 +18x +18

2.

according to newton’s cannonball model, what happens if the cannonball's velocity is enough to overpower the pull of earth’s gravitystep-by-step explanation:

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step-by-step explanation:

other answer is correct. i had used the radius of the radius somehow. a website:

step-by-step explanation: s