3 In a basketball game, LeBron and Shaq combined to score 72 points. If
LeBron scored three times as many points as Shaq, how many points did
each player score?
(Aye can anyone help me out... how am I supposed to write my two equations out of this—??)

Aiden buys two bags of chips at $1.09 each and a 20 ounce soda for $1.20 at the gas station.he knows that the state tax is 5.5. how much change will he receive from a $5 bill?

Precalculus question, image attached.

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