3 times. Draw a line 1 unit up, and you can see that there are 3 intersections.
Which equation represents a proportional relationship?
C. y=1/2x+3
For the first question, simply plug in the value of 3 into the polynomial question. The final answer is your volume of the hot water tub.
For the second question, you can figure out that x = -5 is not a real root because it does not touch or cross the x axis.
If it does it would be an solution.