The coat was $10 then was raised to $12 what was the percent increase

An an average person has 6×10 by the power of two as many red blood cells as white blood cells a small sample of the blood has 7×10 by the power of three white blood cells about how many red blood cells are in the sample

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

The equation of a parabola is given. y=18x2+4x+20 what are the coordinates of the focus of the parabola?