Find the sum.
+ 
A. 
B. 
C. 
D. 
Answer: D
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Use the circle graph to solve the problem.The circle graph shows the percent of the total population of 51,800 of Springfield living in the given types of housing.
Find the number of people who live in single family houses. Round your result to the nearest whole number.
A. 20,720 people B. 40 people C. 18,130 people D. 31,080 people
Solve the problem.A formula for the up-and-down motion of a weight on a spring is given by S = 2 sin 
t, where k is the spring constant, m is the mass, and t is the time. Solve the equation for t.
A. t = 
sin (2/S)
B. t = 
sin (S/2)
C. t = 
arcsin (S/2)
D. t = 
arcsin (S/2)
Solve the problem.Find the arithmetic mean for the collection of numbers.10, 7, 1, 5, 7
A. 6 B. 31 C. 7 D. 7.5
Solve the problem.The decay of 750 milligrams of an isotope is given by 
where t is time in years. Find the amount left after 99 years. Round to the nearest milligram.
A. 730 mg B. 26 mg C. 52 mg D. 50 mg