Solve the problem.The total cost of owning and operating a mini-van when you have driven 3000 miles is 
while the total cost when you have driven 7000 miles is 
. Find and interpret the slope of the line connecting the points (3000, 900) and (7000, 2100).
A. The cost increases $0.30 per mile.
B. The cost decreases $13 per mile.
C. The cost increases $13 per mile.
D. The cost decreases $3.33 per mile.
Answer: A
You might also like to view...
Solve the problem.Last year, nine employees of an electronics company retired. Their ages at retirement are listed below. Find the mean retirement age. Round your answer to the nearest tenth.
A. 57.1 B. 56.5 C. 58.0 D. 57.8
Use a number line to find the sum.9 + (-9)
A. -90 B. 0 C. 9 D. 1
Solve the problem.Find the standard form of the equation of the circle. Assume that the center has integer coordinates and the radius is an integer. 
A. (x - 1)2 + (y + 2)2 = 9 B. x2 + y2 - 2x + 4y - 4 = 0 C. x2 + y2 + 2x - 4y - 4 = 0 D. (x + 1)2 + (y - 2)2 = 9
Answer the question asked. When necessary, round to the nearest hundredth.Three gift wrappers can wrap a box full of gifts in 10 minutes, 20 minutes, and 90 minutes, respectively. How long will it take them to wrap the box full of gifts if they work together? (Round to the nearest minute, if necessary.)
A. 7 min B. 120 min C. 6 min D. 40 min