Solve. Express the answer in scientific notation to two decimals unless requested otherwise.A computer can do one calculation in 1.4 × 10-7 seconds. How long would it take the computer to do a trillion (1012) calculations? Round to one decimal place.
A. 1.4 × 10-7 sec
B. 1.4 × 105 sec
C. 1.4 × 1012 sec
D. 1.4 × 106 sec
Answer: B
Mathematics
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Solve the problem.Use the following table, which shows the average price for a new beverage that is served at a coffee chain. Let the 10 selected regions represent the universal set. Use the list to represent the set in 
form.
The set of regions in which the average price for the new beverage is between $3.00 and $4.99.
A. {E, F, G} B. {A, B, C, D, H, K, L} C. {H, K, L} D. {E, F, G, H}
Mathematics
Find the least common multiple for the set of numbers.60, 80, 50
A. 600 B. 1200 C. 400 D. 240
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Find the area.
A. 20 m2 B. 100 m2 C. 200 m2 D. 40 m2
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Rationalize the denominator. Assume all variables represent positive real numbers.
A. 
B. 
C. 
D. 
Mathematics