Solve the problem.The circumference of a circle is 11? yd. Find its area.
A. 
? yd2
B. 11? yd2
C. 22? yd2
D. 
? yd2
Answer: D
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Graph the compound inequality.x + y ? 2 and y ? 2
A. 
B. 
C. 
D. 
Solve the problem.The diagram shows the roads connecting four cities. Write a matrix to represent the number of routes between each pair of cities without passing through another city.WY
XZ
A. 
B. 
C. 
D. 
Solve the problem.A sample of 500 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, to the nearest gram, after 10 years?
A. 363 g B. 264 g C. 20 g D. 689 g
Solve the problem.In one country, it is estimated that in the year 2050, 3% of the population will be over 70. If the population of this country in 2050 is 142 million, how many people will be over 70?
A. 42.60 million B. 2.84 million C. 4.26 million D. 5.68 million