Solve the problem.At age 50, Ann must choose between taking $20,000 at age 60 if she is alive then, or $30,000 at age 70 if she is alive then. The probability for a person aged 50 living to be 60 and 70 is .83 and 
, respectively. Using expected value, what is Ann's best option?
A. $20,000 at age 60
B. $30,000 at age 70
Answer: B
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Match the graph to one of the polar equations.
A. r = 2 sin ? B. r = 2 cos ? C. r = 1 D. r sin ? = 1
Simplify the rational expression. If the expression is already in simplest form, state this as your answer.
A. 
B. 
C. 
D. 
Use the vertical line test to determine whether or not the graph is a graph in which y is a function of x.
A. not a function B. function
Perform the indicated operations. Round the result to the nearest thousandth if necessary.Nick is going to put insecticide on his lawn to control grubworms. The lawn is a rectangle that measures 236.7 feet by 89 feet. The amount of insecticide required is 0.02 ounces per square foot. a) Find the area of the lawn.b) Find how much insecticide Nick needs to purchase.
A. a) 21,066.3 sq ft b) 1,053,315 oz B. a) 651.4 sq ft b) 13.028 oz C. a) 651.4 sq ft b) 32,570 oz D. a) 21,066.3 sq ft b) 421.326 oz