Use the formula for 
to evaluate the expression.
A. 2520
B. 1
C. 7
D. 1260
Answer: B
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Answer the question.Suppose that a test for a disease correctly gives positive results for 95% of those having the disease and correctly gives negative results for 90% of those who don't have the disease. Suppose also that the incidence of the disease is 1%. If a person tests positive for the disease, what is the chance that they have the disease? Find the exact percentage.
A. 8.8% B. 13.4% C. 95% D. 10%
Multiply or divide. Simplify, if possible. Assume all variables and radicands represent nonnegative real numbers.
A. 2
B. 
C. 5
D. 5
Simplify.8 × 3 + {12 ÷ [8 - (3 + 2)]}
A. 28 B. 27 C. 30 D. 29
Solve.Suppose that a polynomial function is used to model the data shown in the graph below.
For what intervals is the function decreasing?
A. 10 through 25 and 40 through 45 B. 0 through 10 and 25 through 40 C. 10 through 25 and 40 through 50 D. 10 through 50