Simplify the expression.5(3x - 2) - 6(x - 3)
A. -15x + 8
B. 9x - 28
C. 9x + 8
D. 9x - 5
Answer: C
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Provide an appropriate response.Find the extrema of f(x, y, z) = x + yz on the line defined by x = 5(4 + t), y = t - 5, and z = t + 4. Classify each extremum as a minimum or maximum. (Hint: w = f(x, y, z) is a differentiable function of t.)
A. (10, -7, 2), minimum; (30, -3, 6), maximum B. (30, -3, 6), minimum; (0, -5, 0), minimum C. (30, -3, 6), minimum D. (10, -7, 2), minimum
Decide whether the statement is true or false.If the coordinates of one endpoint of a line segment are (0, 0) and the coordinates of the midpoint of the segment are (p, q), then the coordinates of the other endpoint are (-p, -q).
A. True B. False
Plot and interpret the appropriate scatter diagram.The table gives the times spent watching TV and the grades of several students. 
Effect of Watching TV on Grades 
A. Effect of Watching TV on Grades
More hours spent watching TV may
reduce grades.
B. Effect of Watching TV on Grades
More hours spent watching TV may
increase grades.
C. Effect of Watching TV on Grades
More hours spent watching TV may
increase grades.
D. Effect of Watching TV on Grades
More hours spent watching TV may
reduce grades.
Solve.A doctor orders a dosage of 15 ml of medicine every 8 hours for 2 weeks. How many fluid ounces of medicine should be purchased? Round up to the next whole fluid ounce.
A. 20 fl oz B. 22 fl oz C. 19 fl oz D. 21 fl oz