Solve the system by graphing and find the number of each item Abbie purchased

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

2. explain in words how you plot the point (4, −2) in a rectangular coordinate system.

The customer price index(cpi), which measures the cost of a typical package of customer goods,was 208.8 in 2011 and 244.1 in 2016.let x=11 corresponding to the year 2011 an estimate to cpi into 2013 and 2014. assume that the data can be modeled by a straight line and the trend to continue idenfinitely.use data points to find such a line and then estimate the requested quantities