Use absolute value to evaluate.
A. 10,000
B. 10
C. -10
D. not a real number
Answer: B
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The monthly cost of driving a car depends on the number of miles driven. Julia found that in October it cost her $200 to drive 300 mi and in July it cost her $350 to drive 600 mi. Express the monthly cost C as a function of the distance driven d assuming that a linear relationship gives a suitable model.
What will be an ideal response?
Solve.Suppose that the sales of a particular brand of appliance satisfy the relationship 
where S(x) represents the number of sales in year x, with x = 0 corresponding to 1990. For what years will sales be between 2700 and 3150?
A. Between 1996 and 1998 B. Between 1995 and 1998 C. Between 7 and 10 D. Between 1996 and 1999
Solve the equation.ex + e-x = 7
A. 1.9657, -1.9657 B. 1.9248, -1.9248 C. 1.9194, -1.6962 D. 1.5194, -2.3303
Use ZERO (or ROOT) to approximate the smaller of the two x-intercepts of the equation. Express the answer rounded to two decimal places.y = x2 + 5x + 1
A. -4.79 B. 4.79 C. -0.21 D. 0.21