When the heater broke in joshs apartment the temperature dropped from 63.5 to 50.8. By what percentage did the temperature drop

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

Af jewelry box is in the shape of a rectangular prism with an area of 528 cube inches. the length of the box is 12 inches and the height is 5 1/2 inches. what is the width of the jewelry box

If f(x) = 3x2 - 2x+4 and g(x) = 5x + 6x - 8, find (f-g)(x).