Write x^2-8x+22 in the form (x-a)^2 +b

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?

X-intercept=-5 y-intercept=2 the equation of the line is

When you have 25 numbers, and jake picks 3 random numbers and puts them back, what is the chance bob has of picking those 3 numbers when he picks 6 random numbers (without putting them back)? explain.