Solve the problem.Let x represent the number of gallons of gas sold at $2.30 per gallon, and let y represent the total cost of the gasoline (in dollars). Use an equation to find the cost of 13 gallons of gasoline.
A. $29.90
B. $10.70
C. $5.65
D. $15.30
Answer: A
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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
Provide an appropriate response.What happens if C = 90° when the law of cosines is applied in the form 
What will be an ideal response?
Factor completely.12x2 - 25xy + 12y2
A. (3x + 4y)(4x - 3y) B. (3x - 4y)(4x - 3y) C. (3x + 4y)(4x + 3y) D. (12x + 4y)(x + 3y)
Approximate to the nearest thousandth, using a calculator.
A. 0.014 B. 0.001 C. 0.140 D. 1.400