Unformatted text preview: Company A gave an estimate of $200 for materials and equipment rental plus $60 per hour for labor. Company B gave and estimate of $250 for materials and equipment rental plus $50 per hour for labor. Determine how many hours of labor will be required for the two companies to cost the same. 5) Sergio's internet provider charges its customers $9 per month plus 6¢ per minute of online usage. Sergio received a bill from the provider covering a 2month period and was charged a total of $69.00. How many minutes did he spend online during that period? (Round to the nearest whole minute, if necessary.) Solve. Express the result in scientific notation. If necessary, round the decimal factor to two decimal places. 6) If the mass of an object is 3.21024 × 109 tons and its volume is 3.84 × 107 cubic feet, find the density of this object. (Use the formula D = M V .) 1...
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 Spring '08
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 Math, Fax, rental agency charges

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