EXAMPLE 4: Spectrum provides the internet at Charity's apartment. Spectrum used to charge a $6 monthly fee if you rent a modem through their company. Recently, Spectrum increased the monthly
modem fee to $8 per month. Charity decides to purchase a modem so she does not have to pay the
higher rental fee anymore.
Charity searched online for a comparable modem to purchase. She found one at Target that costs
$62.99 plus 8% sales tax. She decides to purchase the modem and will no longer have to pay the
monthly modem rental fee.
How many months will it take for Charity to break-even on her purchase? Think of her 'savings' as
'revenue'
Cost equation:
Revenue equation:
Graphically:
Algebraically:
EXAMPLE 5: The drama club is selling tickets to a play for $10 each. The cost to rent the theater and
costumes is $500. In addition, the printing company charges $0.50 per ticket for printing. How many
tickets must the club sell to make a profit?
Cost equation:
Revenue equation:
Graphically:
Algebraically:

Which of the following best describes the figure?

Find │–14│ a. 14 b. –14 c. start fraction 1 over 14 end fraction

Determine if the following statement is true or false. the normal curve is symmetric about its​ mean, mu. choose the best answer below. a. the statement is false. the normal curve is not symmetric about its​ mean, because the mean is the balancing point of the graph of the distribution. the median is the point where​ 50% of the area under the distribution is to the left and​ 50% to the right.​ therefore, the normal curve could only be symmetric about its​ median, not about its mean. b. the statement is true. the normal curve is a symmetric distribution with one​ peak, which means the​ mean, median, and mode are all equal.​ therefore, the normal curve is symmetric about the​ mean, mu. c. the statement is false. the mean is the balancing point for the graph of a​ distribution, and​ therefore, it is impossible for any distribution to be symmetric about the mean. d. the statement is true. the mean is the balancing point for the graph of a​ distribution, and​ therefore, all distributions are symmetric about the mean.