
Radical Applications
Authored by Barbara White
Mathematics
9th - 10th Grade
CCSS covered

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The average amount of apples consumed by Americans (in pounds per person) between 1980-2000 can be modeled by the equation y=√(22x+275) where x is the number of years since 1980. In what year were about 20 pounds of apples consumed per person?
Tags
CCSS.8.EE.A.2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The average profit of a company (in millions per month) from 2001 to 2008 can be modeled by the equation y=4.5√(1.2x+1.05) where x is the number of years since 2000. In what year will the profit be 12 million?
Tags
CCSS.HSA.REI.A.2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The hull speed, s, in nautical miles per hour of a sailboat can be modeled by the formula s=1.34√L where L is the length in feet of the sailboat’s waterline.Find the speed of a boat whose hull length is 10 feet. Round your answer to the nearest tenth of a nautical mile.
4.2 miles
4.24 miles
55.7 miles
56.7 miles
Tags
CCSS.8.EE.A.2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The number of eggs sold in a supermarket each day can be modeled by the equation y=4500√(0.5x+2) where x is the number of days past since Monday.On what day will 9000 eggs be sold?
Tags
CCSS.8.EE.A.2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The price of a certain kind of computer is surely decreasing. A recent survey shows that the price of Acer 5950G is calculated by the function P(t)=823√(4-0.62t), where P is the price (measured by dollars) and t is the time (measured by years). How many years will it take for the price to decrease to $1000. Round your answer to the nearest tenth.
Tags
CCSS.HSA.REI.A.2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The average amount of sewage discharged by a manufactory (in tons per month) from 2001 to 2010 can be modeled by the equation y=235√(2x+0.75) where x is the number of years since 2000. In what year was about 610 tons of water discharged per month?
Tags
CCSS.8.EE.A.2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The number of bacteria in a swimming pool after disinfection can be modeled by the equation y = 5500√(0.025x+0.1) where x is the number of minutes past.At what time are there 3000 bacteria left in the swimming pool? Round your answer to the nearest whole number.
Tags
CCSS.HSA.REI.A.2
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