Answer: 
<u>Step-by-step explanation:</u>
When you subtract b/2a from both sides, you end up with the Quadratic Formula.
Answer:
2/3
Use the rise over run formula and then simplify
24/40 = T/30
40t= 24•(30)
T= 18
Hope this helps. :)
4: 1 because you could divide both sides of the ratio by 25