Use R commands to accomplish the following

a. Load the data file "sales. RData" (note that this is already in R's format so you can use the function load rather than read. csv).
b. Provide a summary of each column in the sales data frame.
c. Describe how the data is organized (i. e. what is contained in each row or what is the unit of observation).
D. What were the total sales in 2017

Secured loans are protected by collateral security. examples: title loans where the borrower uses the car title as collateral security interest rates are lower and repayments are longer therefore risk is low as a collateral security is given as guarantee to the bank in case of failure to pay the loanunsecured loans are not protected by collateral security but it is given on the creditworthiness of the borrower, trusting that she/he will pay on time. examples; payday loans is a short term loan where the borrower lends money from the bank and pays is back when the borrower receives his/her wages.interest rates are high and repayments are shorter. but the risk is high as no collateral security is given as a guarantee to the bank for payment of the loan

Answer//no one seller can influence the price of the market;