Answer: is 4
Step-by-step explanation:
The new mixture has a total volume of 5 L + 9 L = 14 L.
70% of the 5 L alcohol solution is alcohol, so that it contributed 3.5 L of alcohol to the mixture. The pure water contributed no alcohol. So in the mixture, the concentration of alcohol is
3.5 L / 14 L = 0.25, or 25%
Answer:
Increasing on the interval(s) ![-2\leq x\leq -4](https://tex.z-dn.net/?f=-2%5Cleq%20x%5Cleq%20-4)
Decreasing on the interval(s) ![-1\leq y\leq 1](https://tex.z-dn.net/?f=-1%5Cleq%20y%5Cleq%201)
Step-by-step explanation:
Anytime the graph is going upward, the function is increasing. However, anytime the graph goes down, the function is decreasing. Look at the image below for further reference. Also, when the function is increasing, the slope is positive, and when the function is decreasing the slope is negative.
The increasing interval of the graph is -3
The decreasing interval of the graph is 0.5
Since the values are in the middle of the interval, it automatically becomes the answer.
Teresa is correct because he rode a 1/4 mile bike trail 8 times and if you simplify 8/4 miles it would be 2 miles