Solve the problem. Express the answer in scientific notation to two decimals unless requested otherwise.The median family income in a certain year was $46,676 and there were about 7.2 × 107 families. Calculate the total family income for that year.
A. $336 × 1012
B. $2 × 1012
C. $3.36 × 1012
D. $3.36 × 10-12
Answer: C
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Find the Celsius temperature when the Fahrenheit temperature is 59. Use 
.
?
A. 65.56? C (rounded to the nearest hundredths) B. 15? C C. 32.8?C (rounded to the nearest tenths) D. 15? F E. ?None of the above.
Solve the problem.For x > 0, sketch a curve y = f(x) that has f(1) = 0 and f '(x) = - 
. Can anything be said about the concavity of such a curve? Give reasons for your answer. 
What will be an ideal response?
Solve.A deep-sea diver dives from the surface to 124 feet below the surface and then swims up 10 feet, down 18 feet, down another 26 feet, and then up 21 feet. Find the diver's depth after these movements.
A. -137; 137 ft below the surface B. -85; 85 ft below the surface C. -49; 49 ft below the surface D. -157; 157 ft below the surface
Find the stock turnover at cost and at retail. Round to the nearest hundredth.
A. Turnover at cost = 3.20 Turnover at retail = 3.24 B. Turnover at cost = 2.01 Turnover at retail = 5.17 C. Turnover at cost = 1.61 Turnover at retail = 1.59 D. Turnover at cost = 3.24 Turnover at retail = 3.20