Solve the problem.Your cellular phone contract calls for a flat monthly service charge of $12.95 plus $0.12 per minute for calls within a certain area to which you limit your calls. The table shows some cost data for your use of the phone.
Do the data represent a linear function?
A. Yes
B. No
Answer: A
Mathematics
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The length l, width w and height h of a box change with time. At a certain instant the dimensions are l = 3 and w = h = 4, and l and w are increasing at a rate of 10 m/s while decreasing at a rate of 1 m/s. At that instant find the rates at which the surface area is changing.
What will be an ideal response?
Mathematics
Use polar coordinates to find the limit of the function as (x, y) approaches (0, 0).f(x, y) = cos
A. 1
B. 
C. 0
D. No limit
Mathematics
Make a bar graph using the given frequencies.The frequency distribution indicates the height in feet of persons in a group of 270 people. 
A. 
B. 
C. 
D. 
Mathematics
Determine whether the following is a probability model.
A. Yes B. No
Mathematics