Which set of expressions are not equivalent?

4x (x) + 3 (2x) and 4x2 + 6x

5 (3x) - 4 (3x) and 3x

4 (3a) - 2 (4a) and 4a2

3 (3a) + a (3a) and 3a2 + 9a

Solve by substitution 13x-4y=38 *-6y = - 54

Amy takes a sheet of paper and makes a diagonal cut from one corner to the opposite corner, making two triangles. The cut she makes is 50 centimeters long and the width of the paper is 40 centimeters. What is the paper's length?

3x+y-2z=22 x+5y+z=4 x=-3z

Kai was able to make 24 copies of a new 125-page training manual in sixty minutes. When she returned to her desk, her supervisor asked her to make 32 additional copies for another department.

Marcus, Jonathan and dennis went on a camping trip. Marcus ate 1/4 of thr granola bars, Jonathan att 1/2 of thr granola bars. Dennis ate the remaining 6 bars. How many were in the box to start?

Which represents the inverse of the function f (x) = 4x? h (x) = x + 4 h (x) = x - 4 h (x) = x h (x) = x

How many 8 card hands can be dealt from 52 cards?

A jar of pinto beans and black beans in a ratio of 1:2, and 200 of the beans are pinto beans. How many beans in total are there in the jar?

3 (x-4) - (x+5) = 2x-11

Jane is making a suit which requires 2 5/8 yards for the jacket and 1 3/4 yards for the skirt. What is the total amount of material she needs? A. 3 1/2 yards B. 3 2/3 yards C. 4 yards D.