Solve the problem.The formula 
can be used to estimate the maximum safe velocity v, in miles per hour, at which a car can travel along a curved road with a radius of curvature r, in feet. To the nearest whole number, find the radius of curvature if the maximum safe velocity is 35 miles per hour.
A. 490 ft
B. 1225 ft
C. 196 ft
D. 3063 ft
Answer: A
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Find the perimeter. Use 3.14 for ?.
A. 132.48 yd B. 98.24 yd C. 50.24 yd D. 75.36 yd
Solve the problem.The function f(x) = x3 describes the volume of a cube, f(x), in cubic inches, whose length, width, and height each measure x inches. If x is changing, find the instantaneous rate of change of the volume with respect to x at the moment when x = 9 inches.
A. 245.71 cubic inches per inch B. 243 cubic inches per inch C. 2187 cubic inches per inch D. 27 cubic inches per inch
Solve the system. If the system has infinitely many solutions, write the solution set with x arbitrary.3x + 2y + z = 42x - 3y - z = 55x + 12y + 5z = 2
A. {(x, -5x - 9, -13x + 22)} B. {(x, -5x + 9, -13x + 22)} C. {(x, 5x + 9, -13x + 22)} D. {(x, 5x - 9, -13x + 22)}
Determine the number of terms in the expression.ab + 
- e
A. 2 B. 5 C. 0 D. 3