Translate the sentence into an equality

a number x is increased by 8 is greater than or equal to-23

Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth. x^2 - 20 = x a. 5, 4 b. -5, -4 c. -5, 4 d. 5, -4

How do i start to solve? would appreciate a walk-thru! a bird sitting 16ft above the ground in an apple tree dislodges an apple. after how many seconds does the apple land on the ground? (assuming that no branches will interfere with it's fall)

Awindow washer cleans 42 windows in 2 hours. at this rate, how many windows did he clean in 180 minutes.