Robert is a pharmacy technician. He prepares medications for customers. Robert knows that Medication A requires three times as many pills as Medication B. Last month his customers needed a combination of both pills, amounting to 696 pills. Write two equations, using the variables A and B, to represent the amount of pills his customers needed last month.

The system of equations graphed below has how many solutions? y = 2x + 2

Which of these tables represents a non-linear function?

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?