I know the parabola will open downward because the leading coefficient of the equation, being -5, is negative/less than zero.
<h2>
Quadratic Function Equations</h2>
To find the equation of a parabola given the vertex and the zeroes, we can use the intercept form equation to help us:

- r and s = intercepts/zeros of the graph
<h2>Solving the Question</h2>
We're given:
- Zeros: -8, 4
- Maximum: (-2, 18)

⇒ Plug in the given information:

<h2>Answer</h2>

The fifth grade sold 56 tickets. You solve this by dividing 182/3.25
Answer:
Just find the distance of the vertices of the quadrilateral ( such as : AB, BC, CD DA )by using distance formula...
Then if opposite sides of quadrilateral is equal then it is rectangle .....
hope you understand...