1. Set up a table with the following numerical and categorical data showing the results of a 5k race. Mark, age 30, finished the race in 20 minutes, Susan, age 31, finished the race in 22 minutes. Cheryl, age 27, won the race by finishing in 19 minutes. Use name, age, gender, and time as your headings (10
points)

the answer is b to that quesiton

(a) x intercepts: -6 and 2

you can obtain these by solving the equation 0=x^2 +4x-12 using your favorite quadratic formula. but it is easy to verify -6 and 2 indeed satisfy this equation.

(b) y intercept: -12

this is obtained by setting x=0: 0^2+4*0-12 = -12

(c) the minimum value is: -16 (this is the vertex)

you can get the vertex by rewriting the equation into the form:

there is no global or local maximum as the function goes to infinity, so only in the limit sense: +infinity.