A city uses 6.8 × 10^9 gallons of water every day. How many gallons per minute must be pumped from the reservoir to meet the city's water needs?
a. 4.7E+6
b. 7.9E+4
c. 2.8E+8
d. 6.8E+9
a
Physics & Space Science
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Fill in the blank(s) with correct word
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A 100-W driveway light bulb is on 10 hours per day. Assuming the power company charges 10 cents for each kilowatt-hour of electricity used, estimate the annual cost to operate the bulb
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