The bottom of a valley sets at an elevation of -150 feet. What is the absolute value below sea level in feet?

Aheated piece of metal cools according to the function c(x) = (.5)x ? 7, where x is measured in hours. a device is added that aids in cooling according to the function h(x) = ? x ? 2. what will be the temperature of the metal after two hours?

Solve for n? [tex]z = \frac{3}{4} mn[/tex]

What is the circumference of a circle with an area of 50.24 cm²?