Find the cardinal number for the set.C = {x | x is a second in a minute}
A. n(C) = 3600
B. n(C) = 12
C. n(C) = 120
D. n(C) = 60
Answer: D
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A. 28.5 B. 29.0 C. 31.5 D. 30.5
Use the map to find the shortest route between the given locations.Denver to Alton
A. 144 miles B. 148 miles C. 138 miles D. 154 miles
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
Find an equation for the line, in the indicated form, with the given properties. Containing the points (5, 0) and (-2, -5); general form
A. 5x + 3y = -5 B. -5x + 7y = -25 C. 5x + 7y = -25 D. -5x - 3y = -5