Solve the equation.(2x + 3)1/2 - (x + 1)1/2 = 1
A. {3}
B. {-3, -1}
C. ?
D. {3, -1}
Answer: D
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Find the exact value of the expression.
A. - 
B. -2
C. - 
D. -
Solve the problem.Each year, 492 people move from Babbittown. How many people have moved from the town in 5 years?
A. 2360 people B. 2470 people C. 2952 people D. 2460 people
Solve the problem.When going more than 38 miles per hour, the gas mileage of a certain car fits the model 
where x is the speed of the car in miles per hour and y is the miles per gallon of gasoline. Based on this model, at what speed will the car average 15 miles per gallon? (Round to nearest whole number.)
A. 48 mph B. 73 mph C. 98 mph D. 149 mph
A trough is filled with a liquid of density 855 kg/ . The ends of the trough are equilateral triangles with sides 7 m long and vertex at the bottom. Find the hydrostatic force on one end of the trough.
