Solve the problem.Police use the formula s = 
to estimate the speed s of a car in miles per hour, where d is the distance in feet that the car skidded and f is the coefficient of friction. If the coefficient of friction on a certain gravel road is 0.25 and a car skidded 350 feet, find the speed of the car, to the nearest mile per hour.
A. 2625 mph
B. 102 mph
C. 51 mph
D. 281 mph
Answer: C
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Fill in the blanks to complete the sentence.The fraction 
represents 
of the 
equal parts into which a whole is divided.
A. 47, 11
B. 11, 47
C. 
, 11
D. 
, 47
Approximate the area under the curve and above the x-axis using n rectangles. Let the height of each rectangle be given by the value of the function at the right side of the rectangle.f(x) = 2x2 + x + 3 from x = 0 to x = 6; n = 6
A. 211 B. 200 C. 230 D. 221
Find the vertex and axis of symmetry of the graph of the function.f(x) = x2 - 6x
A. (-3, 9); x = -3 B. (3, -9); x = 3 C. (9, -3); x = 9 D. (-9, 3); x = -9
Solve. Write the answer as a mixed number in simplest form.A nail 3
inches long is driven into a board 2
inches thick. How much of the nail protrudes from the other side of the board?
A. 
in.
B. 2
in.
C. 
in.
D. 
in.