Shera earn $8 per hour for the first 40 hours she works in a week. For any additional hours after that she earns $12 per hour for that week .

What is the lcm of 16 and 40 ? 24 and 40 ?

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.

Write an equation of the line that passes through the point (2, 3) and is perpendicular to the line x = -1. a) y = 1 b) y = 3 c) y = 0 eliminate d) y = -3