Let Q represent a mass of radioactive radium (226Ra) (in grams), whose half-life is 1599 years. The quantity of radium present after t years is
Determine the quantity present after 300 years. Round to the nearest hundredth of a gram.
A. 0 g
B. 0.47 g
C. 5.00 g
D. 4.39 g
E. 0.88 g
Answer: D
Mathematics
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Solve the problem.Find the expected number of boys in a family of 6 children.
A. 4 B. 3.75 C. 3.5 D. 3
Mathematics
Add. Write the answer in lowest terms.
A. 6
B. 1
C. 6
D. 5
Mathematics
The pie chart below shows the number of pizzas consumed by college students in a typical month. Use the chart to answer the question. 
What percent of college students consume 3 or more pizzas in a typical month?
A. 34% B. 57% C. 98% D. 52%
Mathematics
Evaluate the function f at the indicated value.
{5x + 1, if x < 15x, if 5 ? x ? 105 - 5x, if x > 10
A. 25 B. 6 C. 51 D. -20
Mathematics