Use the arc length formula and the given information to find the indicated quantity.r = 15 ft, ? = 35°; find s
A. 
? ft
B. 525 ft
C. 1050 ft
D. 
? ft
Answer: D
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Compare the right-hand and left-hand derivatives to determine whether or not the function is differentiable at the point whose coordinates are given.
y = xy = 2x
A. Since limx?0+ f '(x) = 1 while limx?0- f '(x) = 2, f(x) is not differentiable at x = 0. B. Since limx?0+ f '(x) = 2 while limx?0- f '(x) = 1, f(x) is not differentiable at x = 0. C. Since limx?0+ f '(x) = -2 while limx?0- f '(x) = -1, f(x) is not differentiable at x = 0. D. Since limx?0+ f '(x) = 1 while limx?0- f '(x) = 1, f(x) is differentiable at x = 0.
Provide an appropriate response. You have a board that is 42 inches wide and would like to position 6 smaller boards each 5 inches wide across the big board so that there is no "margin" on either side, but they are equally spaced across the board. How much space should be allowed between each of the small boards?
A. 3 inches
B. 
inches
C. 2 inches
D. 7 inches
Solve the problem.A model airplane takes 2.3 hours to construct and 13.8 hours to finish. Determine the ratio of construction time to finish time in simplest form.
A. 6 to 1 B. 1 to 7 C. 1 to 6 D. 1 to 5
Provide an appropriate response.When solving a system of equations, you get x + 3 = x + 5. How many solutions are there?
A. One solution B. Infinitely many C. No solutions