Answer: D.
Step-by-step explanation:
the ratio of 12/4 is the same as 3
Answer:
A unit rate is a rate with 1 in the denominator.
Step-by-step explanation:
This is not an exponential function. This is a linear function.
<h2>
Answer:</h2>

<h2>
Step-by-step explanation:</h2>
We will use the Gaussian elimination method to solve this problem. To do so, let's follow the following steps:
Step 1: Let's multiply first equation by −2. Next, add the result to the second equation. So:

Step 2: Let's multiply first equation by −1. Next, add the result to the third equation. Thus:

Step 3: Let's multiply second equation by −35, Next, add the result to the third equation. Therefore:

Step 4: solve for z, then for y, then for x:


By substituting
into the first equation, we get the
. So:
