CPM Homework Help : INT3 Problem 8-103

Sketch the graphs of each of the following polynomial functions. Be sure to label the $x$ - and $y$ -intercepts.

$y = x\left(2x + 5\right)\left(2x - 7\right)$
Hint (a):
Determine the $x$ -intercepts using the Zero Product Property.
More Help (a):
Use your graphing calculator to check your graph.

$y = \left(15 - 2x\right)^{2}\left(x + 3\right)$
Hint (b):
This is a cubic function, but there are only two $x$ -intercepts because on of the factors in squared. This factor creates a double root.