Use factoring to find the zeros of the function, and then use the zeros to determine the vertex of the parabola. State the coordinates of the vertex. 1. y=x^2+2x-63
2. y=x^2+2x-24
3. y=x^2+4x-5
4. y=x^2+9x+18

Which quadratic function best fits this data? x y 1 32 2 78 3 178 4 326 5 390 6 337 a. y=11.41x2+154.42x−143.9 b. y=−11.41x2+154.42x−143.9 c. y=11.41x2+154.42x+143.9 d. y=−11.41x2+154.42x+143.9

The physical fitness of an athlete is often measured by how much oxygen the athlete takes in (which is recorded in milliliters per kilogram, ml/kg). the mean maximum oxygen uptake for elite athletes has been found to be 60 with a standard deviation of 7.2. assume that the distribution is approximately normal.

Mustafa contributes 11% of his $67,200 annual salary to his 401k plan. what is his pretax income