PLS HELPP Select the expression equivalent to (-11x - 13) - (-7x + 14)
A -4x - 21
B -4x - 27
C -4x +1
D -18x +

The speed of a falling object increases at a constant rate as time increases since the object was dropped. which graph could represent the relationship betweent time in seconds, and s, speed in meters per second? speed of a falling object object over time

Find the solution of this system of equation -7x+y=-20 9x-3y=36

3x + 4y = 5 x- 3y = -7 solve by substitution