Solve the problem.Ken is 6 feet tall and is walking away from a streetlight. The streetlight has its light bulb 14 feet above the ground, and Ken is walking at the rate of 1.3 feet per second. Find a function, d(t), which gives the distance Ken is from the streetlight in terms of time. Find a function, 
, which gives the length of Ken's shadow in terms of d. Then find 
.
A. (S ? d)(t) = 0.72t
B. (S ? d)(t) = 2.2t
C. (S ? d)(t) = 1.24t
D. (S ? d)(t) = 0.98t
Answer: D
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Write the fraction in lowest terms. Use the method of dividing by a common factor.- 
A. - 
B. - 
C. - 
D. - 
Solve the problem.For a percentage increase of 22%, state the multiplier.
A. 12.2 B. 2.2 C. 1.22 D. 0.22
Solve the problem.Dmitri needs 5 liters of a 36% solution of sulfuric acid for a research project in molecular biology. He has two supplies of sulfuric acid solution: one is an unlimited supply of the 40% solution and the other an unlimited supply of the 30% solution. How many liters of each solution should Dmitri use?
A. 40% solution: 2 liters; 30% solution: 3 liters B. 40% solution: 3.5 liters; 30% solution: 1.5 liters C. 40% solution: 2.5 liters; 30% solution: 2.5 liters D. 40% solution: 3 liters; 30% solution: 2 liters
Evaluate.80
A. 8 B. 0 C. 1 D. -1