POLYNOMIAL EQUATIONS
(Part 2 - Applications)
Ex 
The paths of two orcas playing in the ocean were recorded by some
oceanographers. The first orca’s path could be modelled by the equation,
( )
, and the second by, ( )
, where
is their height above/below the water’s surface in cm and is the time
during the first 8 seconds of play.
a)
At what time(s) is the first orca at the water’s surface?
b)
At what time(s) are the two orcas at the same height?
What is the height?
Ex 
You purchase Mrs. McCarthy a gift in a box with a rectangular base where the
length is 3 cm longer than the width. The height of the box is double the
width. Determine the dimensions of McCarthy’s gift if its volume is 108 cm3.
Homework:
p.204–206 10, 13abc
p.242 #9