What is the exact circumference of the circle?

27 cm
47 cm
8 cm
167 cm

An appliance store sells lamps at $95.00 for two. a department store sells similar lamps at 5 for $250.00. which store sells at a better rate

Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.

Find the zeros of each function. f(x) = x^2 + 5x - 6