The vertex is in the form (x, y).
The x value of the vertex is found using x = -b/2a.
After finding the x values, plug it into the given inequality to find the y value of the vertex.
Then express the vertex as a point in the form (x, y).
Answer:
If each square foot cost $32.50, then the wood will cost $32.50 * 4.90625 = $159.45 :)
Answer:
9 students have braces
Step-by-step explanation:
honestly, you could just probably solve it mentally but we are going to make a proportion.

5*3 = 15; so you then multiply 3 by 3 and get 9 as your final answer
First, convert that into a y=mx+b form.
Move the x to the other side so y is the only thing on the left. Since you moved it to the other side of the equal sign, be sure to make that number negative (the opposite sign)
Now… you have 4y=-3x+28
Let’s get y by itself. Since you’re multiplying 4 and y, you divide everything by 4 to get your y.
That leaves you with y=-3/4x+7.
We are looking at slope, which is your m in the y=mx+b form.
That is -3/4. The answer is the last square.