Solve the problem.The stem and leaf plot depicts the average weight (in pounds) of all four year olds receiving their annual influenza vaccine from the local health clinic. 
Units 6|6 = 66 poundsHow many children weighed 47 pounds at the time of their influenza vaccine?
A. 1
B. 4
C. 2
D. 3
Answer: C
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In a right triangle, find the length of the side not given. Let c represent the length of the hypotenuse. Give an answer to the nearest tenth if necessary.a = 30 cm, c = 50 cm
A. b = 20 cm B. b = 10 cm C. b = 80 cm D. b = 40 cm
Perform the indicated operation and, if possible, simplify.
- 
A. 46
B. 
C. 
D. 
Express the statement as an equation involving the indicated variables.The volume V of a sphere is 
times ? times the cube of the radius r.
A. V = 
?r2
B. V = 
?r
C. V = 
?r3
D. V = 
? 
Solve the problem.Not all murder cases are solved. The percentages of murder cases solved in various years are listed in the table below. 
Let p = f(t) represent the percent of murder cases solved at t years since 1999. A reasonable model is 
Find the p-intercept of the model. What does it mean in this situation?
A. (0, 99.72); in 2007, 99.72% of murder cases were solved B. (0, 70); in 2007, 70% of murder cases were solved C. (0, 70); in 1999, 70% of murder cases were solved D. (0, 99.72); in 1999, 99.72% of murder cases were solved