Solve the problem.The function f(x) = 900(0.5)x/70 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. 707 pounds
B. 303 pounds
C. 286 pounds
D. 579 pounds
Answer: B
Mathematics
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Simplify the complex fraction using the Multiply by the LCD Method.
A. 
B. 
C. 
D. 
Mathematics
Find the probability. Round to the nearest ten-thousandth when necessary.A bag contains 6 cherry, 3 orange, and 2 lemon candies. You reach in and take 3 pieces of candy at random. Find the probability that you have all cherry candies.
A. 0.7272 B. 0.1091 C. 0.1212 D. 0.3636
Mathematics
Estimate by using front-end rounding. 
A. 435 B. 700 C. 500 D. 400
Mathematics
Graph the given function as a solid line or curve and its inverse as a dashed line or curve on the same set of axes.f(x) = 
A. 
B. 
C. 
D. 
Mathematics