Evaluate the expression.
A. 28
B. 9
C. 22
D. 14
E. 7
Answer: C
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Convert. When necessary, round the answer to two decimal places.5 feet to inches
A. 20 B. 60 C. 15 D. 180
Solve.According to his ultra-precise scale, Freddy gained 3.536 pounds in a three-month period. Round this amount off to the nearest hundredth.
A. 3.54 pounds B. 3.5 pounds C. 3.55 pounds D. 0.54 pounds
Find the exact values of the remaining trigonometric functions of ? from the given information.tan ? = - 
, ? in quadrant II
A. sin ? = - 
cos ? = 
tan ? = - 
csc ? = - 
sec ? = 
cot ? = - 
B. sin ? = 
cos ? = - 
tan ? = - 
csc ? = 
sec ? = - 
cot ? = - 
C. sin ? = 
cos ? = - 
tan ? = - 
csc ? = 
sec ? = - 
cot ? = - 
D. sin ? = 
cos ? = - 
tan ? = - 
csc ? = 
sec ? = - 
cot ? = - 
Solve the problem. Round your answer to the nearest whole number.In an epidemiological model used to study the spread of drug use, a single drug user is introduced into a population of N non-users. Under certain assumptions, the number of people expected to use drugs as a result of direct influence from each drug user is given by 
, where b and k are constants. Find the value of S.
A. 3Ne-bkt B. 3N/(b + k) C. N(1 - e-kt)e-bt D. 3N/[b(b + k)]