Write a program that will givew a user a list of hardware items to be purchased including: nails @ $1.50/1b screws @ $2.35/1b hammer @ $20.29 screw gun @ $87.42 sheet metal @ $1.50/ft^2 have the user select their purchases then add up the bill and output the items bought and the total. also charge the customer 6% sales tax. use the switch statement and a while loop to keep asking your customer if they arc done with their order.

The “rule of 72” is used to approximate the time required for prices to double due to inflation. if the inflation rate is r%, then the rule of 72 estimates that prices will double in 72/r years. for instance, at an inflation rate of 6%, prices double in about 72/6 or 12 years. write a program to test the accuracy of this rule. for each interest rate from 1% to 20%, the program should display the rounded value of 72/r and the actual number of years required for prices to double at an r% inflation rate. (assume prices increase at the end of each year.)

An environmental protection agency study of 12 automobiles revealed a correlation of 0.47 between engine size and emissions. at 0.01 significance level, can we conclude that there is a positive association between the variables? what is the p value? interpret.

In command prompt, whats a command that will list only .ini files in c: \windows\system32 directory?