A DVD player is regularly priced at $79.95 and is on sale for 30% off. What is the amount of the discount?

Which value of m will create a system of parallel lines with no solution? y = mx - 6 8x - 4y = 12

A50-foot ladder is leaning against a vertical wall. if the base of the ladder is 45 feet from the base of the wall, find the angle the bottling of the ladder makes with the ground.

The high temp today was 62°. when nighttime comes, the temp will drop 40°. by 4am the temp will drop an additional 40°. what is the temp at 4am?