<span>college tuition and fees have increased 1,120 ... reports that the rate of increase in college costs has been “four times ... tuition at four-year public universities had increased by 15 percent between 2008 and 2010. ... “But if the costs keep on rising, especially at a time when family ...</span><span>
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Answer:
-12
-18
Step-by-step explanation:
-n+8=20
-n=20-8
n=12
-36=n-18
-n=-18+36
n=-18
Answer: <em>one solution.</em>
Step-by-step explanation:
<em>This equation has one solution: x = 6.</em>
Answer:
B) gallons per hour
Step-by-step explanation:
The pool volume is measured in gallons, so that is the appropriate unit for use in the rate. The time will likely be measured in hours (not minutes or seconds), so that, too, is the appropriate unit for the rate.
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<em>Comment on other units</em>
If the pool is filled from a fire hose or other high-volume source of water (irrigation pump, for example), the appropriate units may be gallons per minute. (It might only take 10 to 20 minutes.)
In a metric country, the appropriate units might be liters per minute or hour, or cubic meters per minute or hour. (The pool volume is about 83.3 m³.)
For the problem here, the unit of cups is way too small to be of interest, and (large volume) flow rates are rarely expressed in cups per unit time.