This is my third time posting this. It has yet to be answered correctly. I was able to find the linear regression equation which is Y= 21.174 + 0.318X. I just need part B and C answered now and only have one attempt left so please ensure the answer is correct.

In the packaging department of a large aircraft parts distributor, a fairly reliable estimate of packaging and processing costs can be determined by knowing the weight of an order. Thus, the weight is a cost driver that accounts for a sizable fraction of the packaging and processing costs at this company. Data for the past 10 orders are given as follows: a. Estimate the b0 and b1 coefficients, and determine the linear regression equation to fit these data. b. What is the correlation coefficient (R) ? c. If an order weighs 300lb, how much should it cost to package and process it