Solve the problem.A sample of 300 g of lead-210 decays to polonium-210 according to the function given by 
where t is time in years. What is the amount of the sample after 60 years (to the nearest g)?
A. 230 g
B. 32 g
C. 2046 g
D. 44 g
Answer: D
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Perform the operation. Write the answer as a fraction in lowest terms.
÷ 
A. 
B. 
C. 
D. 
Solve the problem.John owns a hotdog stand. He has found that his profit is represented by the equation 
with P being profits and x the number of hotdogs. How many hotdogs must he sell to earn the most profit?
A. 39 hotdogs B. 20 hotdogs C. 41 hotdogs D. 38 hotdogs
Solve the equation.e0.144x = 14
A. 18.327 B. 0.38 C. 0.055 D. 2.639
The mean weight of a group of boys is 165 lb, with a standard deviation of 20 lb. If the weights are normally distributed, find the probability that one of the boys picked at random from the group weighs between 150 and 195 lb. Round your answer to four decimal places. ?
A. 0.4332 B. 0.2734 C. 0.1598 D. 0.7066 E. 0.2934