1) Compare the key characteristics of the graphs of the following two polynomials.

y= 4-2x

y= x^3 -3x^2 +4

2) Explain the number of possible x-intercepts that each of the following functions could have. Justify your answer.

Quadratic and cubic

3) The volume in a water tank can be modelled by the function V( t) = -2t^2 + 5t+7, where V is the volume in gallons and t is the time after 12:00 pm on a particular day.

3a)Explain how you would determine the volume of the tank at noon.