Java Joe coffees wants to find an equation to estimate monthly utility costs. Java Joe's has been in business for one year and has collected the following cost data for utilities 1.which of the preceding costs is variable? Fixed? Mixed? Explain 2. using the high-low method, determine the cost function for each cost 3. combine the preceding information to get a monthly utility cost function for Java 4. next month, Java's expects to use 2200 kilowatt hours of electricity, make 1500 minutes of telephone calls and use 32000 gallons of water. Estimate total cost of utilities for the month Month Electricity bill Kilowatt hours used telefone telefone min used Water bill Gallons of water used January $360 1200 $92.00 1100 $60 30560 February $420 1400 $91.80 1060 $60 26800 March $549 1830 $94.80 1240 $60 31450 April $405 1350 $89.60 980 $60 29965 May $588 1960 $98.00 1400 $60 30568 June $624 2080 $98.80 1440 $60 25540 July $522 1740 $93.40 1170 $60 32690 August $597 1990 $96.20 1310 $60 31222 September $630 2100 $95.60 1280 $60 33540 October $615 2050 $93.80 1190 $60 31970 November $594 1980 $91.00 1050 $60 28600 December $633 2110 $97.00 1350 $60 34100
Java Joe coffees wants to find an equation to estimate monthly utility costs. Java Joe's has been in business for one year and has collected the following cost data for utilities
1.which of the preceding costs is variable? Fixed? Mixed? Explain
2. using the high-low method, determine the cost function for each cost
3. combine the preceding information to get a monthly utility cost function for Java
4. next month, Java's expects to use 2200 kilowatt hours of electricity, make 1500 minutes of telephone calls and use 32000 gallons of water. Estimate total cost of utilities for the month
|
Month |
Electricity bill |
Kilowatt hours used |
telefone |
telefone min used |
Water bill |
Gallons
|
|
January |
$360 |
1200 |
$92.00 |
1100 |
$60 |
30560 |
|
February |
$420 |
1400 |
$91.80 |
1060 |
$60 |
26800 |
|
March |
$549 |
1830 |
$94.80 |
1240 |
$60 |
31450 |
|
April |
$405 |
1350 |
$89.60 |
980 |
$60 |
29965 |
|
May |
$588 |
1960 |
$98.00 |
1400 |
$60 |
30568 |
|
June |
$624 |
2080 |
$98.80 |
1440 |
$60 |
25540 |
|
July |
$522 |
1740 |
$93.40 |
1170 |
$60 |
32690 |
|
August |
$597 |
1990 |
$96.20 |
1310 |
$60 |
31222 |
|
September |
$630 |
2100 |
$95.60 |
1280 |
$60 |
33540 |
|
October |
$615 |
2050 |
$93.80 |
1190 |
$60 |
31970 |
|
November |
$594 |
1980 |
$91.00 |
1050 |
$60 |
28600 |
|
December |
$633 |
2110 |
$97.00 |
1350 |
$60 |
34100 |
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