Answer:
Part A
C = $.85p
For 2 pounds , the charge is $1.70
Part B
C = $.05 * p
Step-by-step explanation:
Part A
Cost = charge per pound * pounds
We know the charge per pound is $.85
C = $.85 * p
We want to ship 2 pounds
C = .85*2
C = 1.70
Part B
Cost = charge per pound * pounds
We know the charge per pound is now $.05
C = $.05 * p
The given sequence is not arithmetic so, it doesn't has common difference.