Solve for y. Show your work on a scratch piece of paper.
x-y=4

What is the value of 1/3x + 7x when x = 5

Which is the focus of a parabola with equation y2=4x

What will be the end result for the taxpayer who filed his federal income tax return using the 1040ez form shown belowa he'll owe $173b he'll receive a refund of $173c he'll owe $3921d he'll receive a refund of $3921