A new car dealership has taken an inventory of the vehicles it has in stock. Below is a histogram indicating the number of vehicles in stock in certain price ranges. Use the histogram to answer the question. 
How many vehicles in stock are priced between $14,000 and $20,999?
A. 10 vehicles
B. 3 vehicles
C. 15 vehicles
D. 5 vehicles
Answer: C
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Find the unit tangent vector T and the principal unit normal vector N. r(t) = (7 + t)i + (4 + ln(sec t))j - 10k, -?/2 < t < ?/2
A. T = (cos t)i - (sin t)j; N = (-sin t)i - (cos t)j B. T = (-cos t)i - (sin t)j; N = (-cos t)i + (sin t)j C. T = (-cos t)i - (sin t)j; N = (sin t)i - (cos t)j D. T = (cos t)i + (sin t)j; N = (- sin t)i + (cos t)j
Solve the problem.Suppose that the parametrized plane curve C: (f(u), g(u)) is revolved about the x-axis, where g(u) > 0 and a ? u ? b. Show that the surface area of the surface of revolution is 2?
du
What will be an ideal response?
Solve the problem.How close does the curve y = 
come to the point 
? (Hint: If you minimize the square of the distance, you can avoid square roots.)
A. The distance is minimized when x = 0; the minimum distance is 
units.
B. The distance is minimized when x = - 
; the minimum distance is 
units.
C. The distance is minimized when x = 3; the minimum distance is 
units.
D. The distance is minimized when x = 0; the minimum distance is 
units.
Write the formula using the "language" of variation. P = kNT/V, where P is the gas pressure of N molecules of a gas in a volume V at temperature T
What will be an ideal response?