Solve the problem.The function f(x) = 500(0.5)x/100 models the amount in pounds of a particular radioactive material stored in a concrete vault, where x is the number of years since the material was put into the vault. Find the amount of radioactive material in the vault after 
Round to the nearest whole number.
A. 350 pounds
B. 179 pounds
C. 189 pounds
D. 305 pounds
Answer: C
Mathematics
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State how many peaks you would expect for the distribution described.Sales of gloves in Boston over a one-year period
A. Three B. None C. Two D. One
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Perform the indicated operation and express in lowest terms.
+ 
A. 
B. 
C. 5
D. 
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Solve the problem.Which of the following vectors is parallel to v = i + 2j?
A. w = 
i + j
B. w = i - 
j
C. w = 2i + 2j
D. w = i + j
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Find three ordered pairs that are solutions of the given linear equation, and use them to graph the equation.y = 
x
A. 
B. 
C. 
D. 
Mathematics