Solve the problem.A pick-up truck is fitted with new tires which have a diameter of 42 inches. How fast will the pick-up truck be moving when the wheels are rotating at 450 revolutions per minute? Express the answer in miles per hour rounded to the nearest whole number.
A. 9 miles per hour
B. 28 miles per hour
C. 56 miles per hour
D. 47 miles per hour
Answer: C
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Assume you have a digraph with 5 vertices (A, B, C, D, and E) and 9 arcs. A is incident from C, D, and E; B is incident to D and E and incident from C; D is incident to C and incident from E.Vertex B has
A. indegree 3, outdegree 0. B. indegree 0, outdegree 3. C. indegree 2, outdegree 1. D. indegree 1, outdegree 2. E. none of these
Estimate the sum or difference by first rounding to the nearest ten.6957
A. 2434 B. 2400 C. 2440 D. 2430
Solve the system of equations using substitution.
A. x = -8, y = 5 B. x = 8, y = 5 C. x = -8, y = -5 D. x = 8, y = -5
Solve the equation f(x) = 0 analytically and then use the graph of y = f(x) to solve the inequalities f(x) < 0 and 
f(x) = 3ex - 2
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B. 
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