Find the circumference of the circle. Use 3.14 for pi. Do not round up your answer.

For f(x)=2x+1 and g(x)= x^2 -7, find (f•g)(x)

Solve the system of equations. y= 2x y= x^2 - 15

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