Lydia is working at a supermarket. Her weekly pay is modeled by the piecewise function S(h) = (8,0 12h -160, h > 40 where S represents her
salary, in dollars, and h represents the number of hours worked per week.
a. Lydia worked 36 hours through Friday. Deborah asked her to cover her shift on Saturday, which was nine hours long. How much more
money will Lydia earn by working 45 hours for the week, rather than 36 hours?
b. Lydia needs to earn $500 next week in order to pay her rent. How many hours would she have to work in order to earn $500?

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

Which table represents a linear function? i'll give brainliest to first answer ^'^

Data from 2005 for various age groups show that for each $100 increase in the median weekly income for whites, the median weekly income of blacks increases by $105. also, for workers of ages 25 to 54 the median weekly income for whites was $676 and for blacks was $527. (a) let w represent the median weekly income for whites and b the median weekly income for blacks, and write the equation of the line that gives b as a linear function of w. b = (b) when the median weekly income for whites is $760, what does the equation in (a) predict for the median weekly income for blacks?