Use the FOIL method to find the product.(x - 11)(5x - 9)
A. x2 - 64x - 64
B. 5x2 - 64x + 99
C. 5x2 - 65x + 99
D. 5x2 + 99x - 64
Answer: B
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Solve the problem.Scores on a test are approximately normally distributed with a mean of 70 and a standard deviation of 9. The teacher wants to give A's to the top 10% of students and B's to the next 23%. What is the bottom cutoff for a B grade? Round your answer to the nearest whole number.
A. 66 B. 76 C. 74 D. 71
Determine whether the function is periodic. If it is periodic, find the period.f(x) = 4 cos (2x + 1) - sin (3x - 1)
A. 2? B. Not periodic C. ? D. 4?
An objective function and a system of linear inequalities representing constraints are given. Graph the system of inequalities representing the constraints. Find the value of the objective function at each corner of the graphed region. Use these values to determine the maximum value of the objective function and the values of x and y for which the maximum occurs.Objective Functionz = 20x + 4yConstraints0 ? x ? 10 0 ? y ? 5 3x + 2y ? 6
A. maximum: 20; at (0, 5) B. maximum: 220; at (10, 5) C. maximum: 200; at (10, 0) D. maximum: 12; at (0, 3)
Draw the following angle in standard position and then name the reference angle.
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A. ?
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B. ?
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C. ?
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D. ?
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E. ?
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