Which variable is most important to the following problem? Dorothy played the first 17 minutes of the game. Evelyn then replaced her for
the rest of the half. Evelyn started the second half and was replaced by
Dorothy with 21 minutes left in the game. If each half is 45 minutes long, how
many minutes did Evelyn play?

A. the amount of time Evelyn played

B. the number of players on a team

C. the length of a half

greater than one

step-by-step explanation:

cant see photo

step-by-step explanation:

(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.