Solve the problem.Find a curve through the point (-4, 1) whose length integral, 1 ? y ? 2, is L = 
A. x = -4
B. x = 
C. x = -4y5/2
D. x = 
Answer: D
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Find the mean.Jill kept track of the number of hours she spent exercising each week. The results for four months are listed below. Find the mean number of hours Jill spent exercising per week. Round your answer to one decimal place if necessary. 6.7 7.4 7.5 8.6 7.3 6.7 8.7 7.5 8.2 6.7 8.6 8.3 8.8 7.4 7.4 8.2 7.3 8.7
A. 8.2 B. 7.8 C. 7.4 D. 8.0
Write the phrase as a mathematical expression. Use x to represent the number. Combine like terms if possible.A number multiplied by 5, added to -5, subtracted from 5 times the sum of 9 times the number 
A. 5(9x + 2) - [5x + (-5)]; 40x + 15 B. 5(-5 + x) + 5(9x + 2); 50x - 23 C. 5(-5 + x) + 5(9 + 2x); 7x + 20 D. 5x - 5 + 5(9 + 2x); 15x + 50
Find the coordinates of the given point:
A. (4, 4) B. (4, -4) C. (-4, 4) D. (-4, -4)
For the given demand equation, differentiate implicitly to find dp/dx.
= 1
A. 
= 
B. 
= 
C. 
= 
D. 
= 