Zachary has a taxable income of $70,000. How much did he pay in Medicare tax this year?

What is the vertex form of f(x) = x2 + 6x + 3

If 20% of a number is 35, what is 50% of that number?

Which of the following equations is of the parabola whose vertex is at (4, 3), axis of symmetry parallel to the y-axis and focus at (4, -3)? a.) y+3=1/24 (x+4)^2 b.)y-3=-1/24 (x-4)^2 c.)x-4=-1/24 (y-3)^2