Name:
Algebra Print Activity
As you work through the Video Interactive, answer the following questions.
1.
What do the variables R and n represent?
R=
n=
2.
a.
How many records did the DJ sell?
b.
What is the cost per record? $
c.
What is the equation relating R and n?
=
d.
Determine the revenue using your equation from the previous question.
=
(
)
Revenue = $
e.
The graph drawn on the left side of the screen is called a
graph and it appears
the $0 line.
(bar/line/circle)
f.
3.
(above/below)
What amount is labeled on the black bar? $
What quantity does it represent?
What do the variables T and n represent?
T=
n=
4.
a.
How many records did the DJ produce?
b.
What is the cost to produce each record? $
c.
What is the cost of the DJ’s equipment? $
Junior High Math Interactives
2005 Alberta Education (www.LearnAlberta.ca)
Patterns and Relations / Algebra / Video Interactive / Print Activity
Page 1 of 4
d.
What is the equation relating T and n?
=
e.
+
Determine the total expenses using your equation from the previous
question.
=
+
(
)
Total Expenses = $
f.
The new bar that appears on the graph drawn on the left side of the screen
appears
the $0 line.
(above/below)
5.
g.
What amount is labeled on the red bar? $
What quantity does it represent?
a.
Complete the following statement.
Profit =
(Revenue/Expenses)
b.
(Revenue/Expenses)
Determine the DJ’s total profit by completing the equation.
Profit =
-
Profit = $
c.
The graph animates to display a solid bar which represents the
. This solid
bar appears
(revenue/expenses/profit)
(red/black)
$0 line which indicates the profit is
the
(above/below)
.
(positive/negative/zero)
Using the Video Interactive as a guide, answer the following questions.
6.
a.
The DJ sells 50 records at $8 each. His revenue, R dollars, can be
represented by the formula R = 8n, where n is the number of records sold.
Determine the revenue using the equation.
R = 8n
R=8(
)
Revenue = $
Junior High Math Interactives
2005 Alberta Education (www.LearnAlberta.ca)
Patterns and Relations / Algebra / Video Interactive / Print Activity
Page 2 of 4
b.
The DJ produced 50 records at a cost of $3 each and his equipment cost
$62. His total expenses, T dollars, can be represented by the formula
T = 62 + 3n, where n is the number of records produced. Determine the
expenses using the equation.
T = 62 + 3n
T = 62 + 3 (
)
Total Expenses = $
c.
Determine the DJ’s total profit using the equation.
Profit = Revenue – Expenses
Profit =
Profit = $
d.
The final animated graph would appear as a solid
bar
(red/black)
the $0 line which indicates that the profit is
(positive/negative/zero)
7.
a.
(above/below)
.
The DJ sells 60 records at $4 each. His revenue, R dollars, can be
represented by the formula R = 4n, where n is the number of records sold.
Determine the revenue using the equation.
R = 4n
R=4(
)
Revenue = $
b.
The DJ produced 60 records at a cost of $7 each and his equipment cost
$43. His total expenses, T dollars, can be represented by the formula
T = 43 + 7n, where n is the number of records produced. Determine the
expenses using the equation.
T = 43 + 7n
T = 43 + 7 (
)
Total Expenses = $
Junior High Math Interactives
2005 Alberta Education (www.LearnAlberta.ca)
Patterns and Relations / Algebra / Video Interactive / Print Activity
Page 3 of 4
c.
Determine the DJ’s total profit using the equation.
Profit = Revenue – Expenses
Profit =
Profit = $
d.
The final animated graph would appear as a solid
bar
(red/black)
the $0 line which indicates the profit is
8.
a.
(positive/negative/zero)
(above/below)
.
The DJ sells 50 records at $8 each. His revenue, R dollars, can be
represented by the formula R = 8n, where n is the number of records sold.
Determine the revenue using the equation.
R = 8n
R=8(
)
Revenue = $
b.
The DJ produced 50 records at a cost of $6 each and his equipment cost
$100. His total expenses, T dollars, can be represented by the formula
T = 100 + 6n, where n is the number of records produced. Determine the
expenses using the equation.
T = 100 + 6n
T = 100 + 6 (
)
Total Expenses = $
c.
Determine the DJ’s total profit using the equation.
Profit = Revenue – Expenses
Profit =
Profit = $
d.
The final animated graph would disappear to indicate that the profit is
.
(positive/negative/zero)
Junior High Math Interactives
2005 Alberta Education (www.LearnAlberta.ca)
Patterns and Relations / Algebra / Video Interactive / Print Activity
Page 4 of 4