Can you help me with question for? If you can answer question 3 without the multiple choice that would be nice to. Thank you

3.) 3.5 hours

Step-by-step explanation:

3.)

5 = -2x + 12

-12 -12

-7 = -2x

\ -2 \ -2

-7/-2 = 3.5 hours

4.) The equation is written in slope intercept form which means y = mx + b

m= slope

b = y-intercept

To figure out the y-intercept, you look when the graph is 0 at x which was 32

To figure out the slope you do rise over run subtracting the two points from each other

86-32/30-0 = 54/30 = 9/5

This means the equation is y= 9/5x + 32

b

step-by-step explanation:

given

- 2 (3x + 12y - 5 - 17x - 16y + 4 )

simplify the parenthesis by collecting like terms

= - 2 (- 14x - 4y - 1) ← distribute the parenthesis by - 2

= 28x + 8y + 2 → b

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