Set up a proportion and solve. If a 36 in. yardstick casts a 21 in. shadow, how tall is a building whose shadow is 168 ft?

Find the domain of the following expression: 1/(√x)-2

What is the area of a rectangle with vertices (-8,-2), (-3,-2), (-3,-6), and (-8,-6)? units

What is the equation, in point-slope form, of the line that has a slope of 6 and passes through the point (–1, –8)? a. y+8 = 6 (x+1 )