Write a cost function for the problem. Assume that the relationship is linear.A cab company charges a base rate of $1.50 plus 15 cents per minute. Let C(x) be the cost in dollars of using the cab for x minutes.
A. C(x) = 1.50x + 0.15
B. C(x) = 1.50x - 0.15
C. C(x) = 0.15x + 1.50
D. C(x) = 0.15x - 1.50
Answer: C
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Solve.A census was taken to determine the median annual income for residents of a selected region of the United States, by level of education. The given polynomial models describe the median annual income for men, M, and for women, W, who have completed x years of education. Shown in a rectangular coordinate system are the graphs of the polynomial models. Identify the median annual income for a woman with 10 years of education as a point on the appropriate graph.M = 224x2 - 1266x + 20,106W = 287x2 - 4030x + 33,761
A. (10, 22,161) B. (10, 41,240) C. (10, 58,431) D. (10, 29,846)
Solve the system. x - y + 3z = -23x + z = -2 x + 3y + z = -14
A. (-2, 0, -4) B. (0, -4, -2) C. (-4, 0, -2) D. (-2, -4, 0)
Solve the system of equations.
A. 
B. ?
C. {(x, y)| 9x - 8y = 4}
D. (3, 4)
Tell whether the relation is a function.
A. Function B. Not a function