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Emily's last water bill listed a previous reading of \(7,123\) ccf and a present rading of \(7,171\) cc. Her water company charges \(\$ 0.73\) per ccf of water. What should Emily have been charged on her last water bill?

Create a year-long budget check-off matrix to chart the following transportation related expenses: Fuel: monthly; Insurance: quarterly; Servicing: every three months; Car wash: bimonthly; Parking: semi- annually; Public transportation: monthly.

A pay phone at a shopping mall charges \(\$ 0.68\) for the first four minutes and \(\$ 0.21\) for each extra minute (or part of a minute). a. Find the cost of a \(10-\) minute call on this phone. b. Find the cost of a 13.44 - minute call on this phone.

A phone company set the following rate schedule for an \(m\) -minute call from any of its pay phones. $$c(m)=\left\\{\begin{array}{ll}{0.70} & {\text { when } m \leq 6} \\\ {0.70+0.24(m-6)} & {\text { when } m > 6 \text { and } m \text { is an integer }} \\ {0.70+0.24([m-6]+1)} & {\text { when } m > 6 \text { and } m \text { is not an integer }}\end{array}\right.$$ a. What is the cost of a call that is under six minutes? b. What is the cost of a 14 -minute call? c. What is the cost of a 9\(\frac{1}{2}\) -minute call?

Create a year-long budget matrix to chart these expenses: Savings: \(600 bimonthly (starting in January); Retirement account: \)2,000 quarterly; Checking account: \(1,000 semi-monthly; Credit card: \)500 monthly; Life insurance: \(400 semi-annually; Real estate taxes: \)1,300 every four months beginning in April.

Home heating oil is sold by the gallon. Last winter, the Romano family used 370 gallons of oil at a price of \(\$ 3.91\) per gallon. If the price increases 9\(\%\) next year, what will their approximate heating expense be? Round to the nearest ten dollars.

The PA system at North High School requires 400 watts when it is switched on. How much would it cost to run for 3 hours, at a cost of \(\$ 0.10\) per kilowatt-hour?

A local cable TV/Internet/phone provider charges new customers \(\$ 99\) for all three services, per month, for the first year under their \( 3\) for] \(99^{\prime \prime}\) promotion. Joanne normally pays \(\$ 54\) for monthly home phone service, \(\$ 39\) for Internet service, and \(\$ 49\) for cable television. a. What are her percent savings if she switches to the 3 for 99 plan? Round to the nearest percent. b. If, after the first year, the flat fee for all three services is \(\$ 129\) , what are her percent savings? c. Craig usually pays \(p\) dollars for phone service, \(i\) dollars for Internet service, and c dollars for cable TV service monthly. Represent savings under the 3 for 99 plan algebraically, as a percent.

The Zwerling family installed central air conditioning in their house this summer. They are compring the electric bills of this summer and last summer. The data is shown. $$\begin{array}{|c|c|c|}\hline \text { Month } & {\text { This Summer }} & {\text { Last Summer }} \\ \hline \text { June } & {\$ 311.20} & {\$ 179.90} \\\ {\text { July }} & {300.65} & {\$ 203.40} \\ {\text { August }} & {302.50} & {\$ 201.11}\end{array}$$ a. What was the total electric bill this summer? b. What was the total electric bill last summer? c. Did the bill increase more or less than 50\(\%\) ?

Construct a pie chart that shows the following transportation-related expenses: Fuel: \(\$ 240\) ; Insurance: \(\$ 80 ;\) Public transportation: \(\$ 200\) ; Parking garage: \(\$ 120 ;\) Repairs: \(\$ 160\) .