Find the sum.[-2 + (-20)] + [(-5) + (-12)]
A. -39
B. -35
C. 5
D. -25
Answer: A
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Apply the distributive property.(x + y - 2)(-7xy)
A. 7x2y - 7xy2 +14xy B. -7x2y + 7xy2 +14xy C. -7x2y - 7xy2 +14x2y2 D. -7x2y - 7xy2 +14xy
A diagnostic test for a certain disease has a sensitivity of 0.98 and a specificity of 0.96. The probability that a patient has the disease is estimated as 0.2. The diagnostic test is given and returns negative. What is the posterior probability that the patient does not have the disease?
What will be an ideal response?
Solve the system using the substitution method. If the system has no solution or an infinite number of solutions, state this.x + 3y = 15-3x + 4y = 20
A. No solution B. (0, 5) C. (1, 4) D. Infinite number of solutions
Solve the problem.The following data represents the average monthly minimum temperature for a certain city in California. 
Draw a scatter diagram of the data for one period. Find a sinusoidal function of the form 
that fits the data. Draw the sinusoidal function on the scatter diagram. Use a graphing utility to find the sinusoidal function of best fit. Draw the sinusoidal function of best fit on the scatter diagram.
What will be an ideal response?