Provide an appropriate response.Use the FOIL method to find the product: (a + 5)(a - 3)
A. a2 - 2a - 15
B. a2 - 8a + 15
C. a2 + 2a - 15
D. a2 + 8a - 15
Answer: C
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Simplify each side of the equation and then solve. Check your solution.55 - (-8) = 7x
A. 60 B. 15 C. 9 D. 56
Use Bayes' rule to find the indicated probability.The incidence of a certain disease on the island of Tukow is 4%. A new test has been developed to diagnose the disease. Using this test, 91% of those who have the disease test positive while 4% of those who do not have the disease test positive (false positive). If a person tests positive, what is the probability that he or she actually has the disease?
A. 0.438 B. 0.487 C. 0.91 D. 0.856
The graph shows the average time spent doing homework. Use the graph to answer the question. 
If 5000 students were surveyed, find the number of students who said they spend 40 minutes or less on homework.
A. 1100 students B. 2175 students C. 2150 students D. 1050 students
Solve the problem.A rock falls from a tower that is 208 feet high. As it is falling, its height is given by the formula 
How many seconds will it take for the rock to hit the ground 
Round to the nearest tenth, if necessary.
A. 13.9 sec B. 3.6 sec C. 14.4 sec D. 2704 sec