Solve the problem.If n(A ? B) = 70, n(A ? B) = 22, and n(A) = n(B), find n(A).
A. 46
B. 11
C. 24
D. 35
Answer: A
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Solve the problem.Police use a formula s = S 
, where S is the test-car speed (mph) and L is the test-skid length (feet), to find the actual speed s in an accident which left a skid mark of length l. Find the actual speed (to the nearest tenth) when S = 63 mph, l = 150 ft, L = 100 ft.
A. 77.2 mph B. 113.0 mph C. 51.7 mph D. 94.5 mph
Solve the problem.If an earthquake measured 6.1 on the Richter scale, what was the intensity of the earthquake? 
Round to the nearest whole number.
A. 125,893 B. 1,000,000 C. 1,258,925 D. 446
Write the binomial expansion of the expression.(-3m - 3n)4
A. 81m4 + 324m3n + 486m2n2 + 324mn3 + 81n4 B. 81m4 + 5184m3n - 2916m2n2 + 324mn3 - 81n4 C. 81m4 + 324m3n - 486m2n2 + 324mn3 - 81n4 D. 81m4 + 5184m3n + 2916m2n2 + 324mn3 + 81n4
Use the graph to answer the question. 
What were the total sales for the first 6 months of 2007?
A. $302,000 B. $64,000 C. $366,000 D. $286,000