According to the 1993 World Almanac, the number of calories a person walking at 3 mph, bicycling at 10 mph, or swimming at 2 mph burns per minute depends on the person's weight as in the following table.

(a) Use the table to determine the number of calories that a person weighing 170 pounds uses in a half-hour of walking.
help (numbers)

(b) The table illustrates a relationship between the number of calories used per minute walking and a person's weight in pounds.

Identify the independent variable(s)
A. calories used per minute bicycling
B. weight in pounds
C. calories used per minute swimming
D. calories used per minute walking

Identify the dependent variable(s)
A. weight in pounds
B. calories used per minute bicycling
C. calories used per minute swimming
D. calories used per minute walking

The function described in this relationship is
A. constant
B. decreasing
C. increasing