Brooke earns $7 an hour at her job now. she can represent the total she makes in a week using the expression 7r. brooke has asked for a $1 an hour raise. which expressing would represent the amount brooke would make in a week after the raise?

The anwser cause i do not understand just plez

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

Which is the directrix of a parabola with equation x2=8y y = 2 x= -2 y=-2 x= 2