Write a cost function for the problem. Assume that the relationship is linear.An electrician charges a fee of $55 plus $40 per hour. Let C(x) be the cost in dollars of using the electrician for x hours.
A. C(x) = 40x - 55
B. C(x) = 55x - 40
C. C(x) = 55x + 40
D. C(x) = 40x + 55
Answer: D
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Solve the problem.Find the vertices and foci of the following hyperbola:
- 
= 1
A. Vertices: (0, 4), (0, -4); Foci: (0, 10), (0, -10) B. Vertices: (16, 0), (-16, 0); Foci: (10, 0), (-10, 0) C. Vertices: (4, 0), (-4, 0); Foci: (10, 0), (-10, 0) D. Vertices: (0, 10), (0, -10); Foci: (0, 4), (0, -4)
Solve the problem.Refer to the given preference schedule. If the Borda count method is used to determine the winner and C drops out, is Fairness Criterion 4 satisfied?
A. Yes B. No
Determine whether the given geometric series is convergent or divergent, and find the sum if it is convergent.17 + 10.2 + 6.12 + 3.672 + ...
A. Convergent; S = 63.75 B. Convergent; S = 42.5 C. Divergent D. Convergent; S = 25.5
Write an equation for a function whose graph fits the given description.The graph of f(x) = x2 is shifted 2 units to the left. This graph is then vertically stretched by a factor of 5 and reflected across the x-axis. Finally, the graph is shifted 7 units downward.
A. y = -5(x - 2)2 + 7 B. y = -5(x - 2)2 - 7 C. y = -5(x + 2)2 - 7 D. y = -5(x + 7)2 - 2