14. 6.4 blocks
15. 1.78
16. 7.47
The fourth set of ordered pairs is the function.
The definition of a function is that no matter what x value you put in, you get only one y value out. So no x value will have more than one answer. However, in the first 3 choices, you can see that each one has an x value that has two different y value answers.
In grouping 1, x = -1 gives us both y = 1 and y = -1.
In grouping 2, x = 0 gives us both y = 1/2 and y = 3/4.
And in grouping 3, x = -2 gives us both y = 1 and y = 2.
Therefore, the last grouping is your function.
2.6*10 4
two. six times ten to the fourth
<em>My goodness, this is rather confusing in the way it is worded. Nevertheless, I will attempt to do what I can. Just please keep in mind that this is my own interpretation of the problem, and therefore could be... incorrect.</em>
<em>I think, to start out, we could set up the problem like so</em>
<em>15 + t ≥ 26</em>
<em>because t is not a set number. </em>
<em>Then all that is needed is to subtract 15 from both sides, and the equation becomes</em>
<em>t ≥ 11</em>
<em>So the resulting answer is t ≥ 11.</em>
<em />
<em>I hope that my interpretation helps.</em>
<em>-Toremi</em>
<em />
x² - 4x + 8 → there are 3 terms (remember to include the sign with each term)
term 1: x²
term 2: -4x
term 3: 8
