Using quadratic function concepts, it is found that Abby made a mistake on the coordinates of the vertex, which are (-4,1).
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- A quadratic function is defined by:

- The y-intercept is given by point:

- The vertex is given by:
. - The axis of symmetry is:

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The function given is:

- Which is a quadratic equation with:
.
, thus, the y-intercept is (0, -15).

- Thus, the <u>x-coordinate of the vertex</u> is x = -4, which is the same as the <u>axis of symmetry</u>.

- The vertex is given by: (-4,1).
A similar problem is given at brainly.com/question/14680175
<span>c = w * t*k
</span><span>198 = 220*5k
</span><span>198------ = k = .18220(5)
c = .18(175)(6) = 189
</span>
let
x = the number of party favors in each of the 27 boxes
y = the number of party favors in the last box
the total number of party favors is 1,552
27x + y = 1,552
since 1552 = 57*27 + 13
if we assume that y<x we conclude that there are 57 party favors in each of the 27 boxes and 13 party favors in the last box.
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Twice.
Once at the spring equinox, once at the fall equinox.