The play director spent 190 hours preparing for a play. That time included attending 35 rehearsals that took
varying amounts of time and spending 93– urs on other responsibilities related to the play.

What question does the equation 352 + 93 = 190 help answer?

Choose 1
A:
How much longer did the director spend on rehearsals than on other responsibilities?
B:
What was the average length of each rehearsal?
C:
How long was each rehearsal?

the answer is b

Step-by-step explanation:

let's cover over the formula of the vertex:

y = a(x – h)^2 + k

in this formula, (h,k) are the vertex, always remember that the positive or negative value of the vertex is based on the sign it has.

for example, if the vertex is -3,-6 then both the x and y value would have the positive sign attached to it and if it were a positive x and y value, then a negative sign would be attached to it.

with that being said, for our problem the x value is a positive one so we are looking for a number with a negative sign next to it, in this case the first and second choice.

however, for the first answer choice it isn't quite part of the formula so we know that the answer choice correctly displays the x value.

to confirm, we can see if the -1 fits correctly with the second answer choice, and as mentioned above a negative number will have a positive sign attached to it. so, for our problem we can see that -1 has been changed to +1, so we can confirm that the second answer choice is correct.

hence, our final answer is y=(x - 1)^2 + 1