The ratio of secondary turns to primary turns in a transformer is 37 to 2. How many secondary turns are there if the primary coil has 38 turns?
A. 700 turns
B. 703 turns
C. 710 turns
D. 698 turns
E. 688 turns
Answer: B
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Solve the problem.Going toward San Francisco a building with a vertical height of 175 feet is seen from a small boat. At a distance x feet from the building, the angle of elevation ? of the top of the building can be found from the equation x = 175 cot ?. Sketch x as a function of ?.
A. 
B. 
C. 
D. 
Find the perimeter (distance around) the given figure by adding the lengths of the sides.
A. 5.54 feet B. 12.56 feet C. 6.28 feet D. 9.282 feet
Solve.4[3 - 3(x + 1)] + 1 ? 2(-43 - x) + 2x + 43 Put your answer in set-builder notation.
A. 
B. 
C. 
D. 
Solve the problem.How long will it take a sample of radioactive substance to decay to half of its original amount, if it decays according to the function A(t) = 250e-.223t, where t is the time in years? Round your answer to the nearest hundredth year.
A. 3.11 yr B. 24.76 yr C. 55.75 yr D. 27.87 yr