Question 1 Multiple Choice Worth 2 points)
1 answer:
Using a system of equations, it is found that the trains will be side by side in 15 seconds.
<h3>What is a system of equations?</h3>A system of equations is when two or more variables are related, and equations are built to find the values of each variable.
In this problem, the <em>equations </em>are:
They will be side-by-side when:
Hence:
The trains will be side by side in 15 seconds.
More can be learned about system of equations at brainly.com/question/24342899
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Answer:
A
Step-by-step explanation:
Hihi. So, this is a nice application of interest rates as well as properties of exponentials/logarithms. As you know, the basic equation for interest rates is A= Pe^(rt) where A is your final amount, P is your initial, r is your rate of interest, and t is the time the money was accumulating interest. After cleaning up, you get in a situation due to you having e still lying around. Luckily, if you take the natural log of e, all you have left behind is the previous exponent. Thus, you can take the natural log of both sides, divide by 4, and then simplify to see that your final interest rate is ~6%
