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MA 220 Lesson 4 Notes
You will need to remember the following formulas for this lesson.
Area of a rectangle:
A wL
(Area = length
width)
Volume of a rectangular prism (box):
V
LwH
(Volume = length
width
height)
Ex 1: a) Represent the volume of a box that is
n
inches high,
n
+ 3 inches wide, and
n
+ 8
inches long.
Write as a function of
n
.
b)
Evaluate the volume when
n
is 3.
c)
Represent the area of the base of the box as a function of
n
(
A
(
n
)).
Find the area
when
n
is 3.
d)
Write a function of
n
to represent the area of the base if the length and width are
both increased by 3.
Show that this is the same as
A
(
n
+ 3), using your function
from part (c).
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View Full Document Ex 2:
a)
Write a polynomial function
V
(
x
) to represent the volume of the box below.
b)
Evaluate the volume of the box above if
x
is 4.
c)
Write a polynomial function
A
(
x
) to represent the area of the bottom of the box and
evaluate that area if
x
is 12.
d):
Write a polynomials function to represent the area of the bottom of the box if the length and
width both increase by 3 units.
Evaluate
(
3)
Ax
.
Notice anything?
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This note was uploaded on 01/19/2012 for the course MA 22000 taught by Professor Staff during the Spring '08 term at Purdue UniversityWest Lafayette.
 Spring '08
 Staff
 Formulas

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