Which of the following equations represents an exponential relationship?

y = 3(-1)x
y = 3x - 1
y = 3x2
y = x3 - 1

If 3 3/4 lb. of candy costs 20.25 how much would 1lb. of candy cost

Astudent draws two parabolas both parabolas cross the x axis at (-4,0) and (6,0) the y intercept of the first parabolas is (0,-12). the y intercept of the second parabola is (0,-24) what is the positive difference between the a values for the two functions that describe the parabolas

Macy spent $36 on jeans. this was $12 less than twice what she spent on a shirt. which equation to solve this, 12x=36 2x=36-12 2x-12=36 12-2x=36