The vertex would be (-5, 7).
The parabola would open downwards because of the negative sign at the very beginning of the equation. If that negative sign wasn't there, it would open upwards.
Don't think clever or anything. I just used a simple graphing calculator, and most classes encourage the use of these calculators.
The answer is square root of 149 and in decimals form it would be 12.20
Answer:
Volume = 499 ft
Step-by-step explanation:
Calculate the volume of the room.
Answer:

Step-by-step explanation:
Hello!
We can first factor out the greatest common factor between the coefficients: 3.
Now, let's work with what we have inside the brackets.
Standard form of a quadratic: 
Given our equation: 
We need to find two numbers that add up to b (13) and multiply to ac (-30).
The two numbers are 15 and -2. Expand 13x to 15x and -2x and factor by grouping.
<h3>
Factor by Grouping</h3>
Now, we simply add the other factor, 3, to the final factored form.
Factored Solution: 
Hfjfifudufu du kfifudidjfjcjvjgg D bf oh g da hdhx