Answer:
5. D
6. C
Step-by-step explanation:
<u>Question 5</u>
Lets plug in values of x and y into each equation to see which one works for the entire data set...
y=2x-4
1) Plug in -7 as x and -18 as y:
-18=2(-7)-4
2) Multiply:
-18=-14-4
3) Subtract:
-18=-18
The answers are the same, therefore the correct answer to question 5 is equation D. Keep in mind, you want to check ever single pair of points to make sure it works for all of them, I'm just not going to list that as it would make this answer a lot longer for no reason.
<u>Question 6:</u>
We know that the cost for the boat is $25 as a base price, and also costs an additional $1.30 per day for fuel.
The correct equation is C=25+1.30d, because we are adding 1.3 every single day.
Round it to 2. anything above 5 rounds to 10, 4 and below round to 0
The Depth of the Scientist before dropping is; 42.2 ft
<h3>How to calculate sea level elevation?</h3>
It is pertinent to note that sea level is usually considered zero level. Thus, one is either above the sea level (positive sign) or below the sea level.
Now, we are told that the scientist was already below the sea level before she dropped 24.9 ft.
Now, if after dropping 24.9 ft, she is now 66.7 ft below sea level, then it means that the depth she was at before dropping 24.9 ft is;
Depth before dropping 24.9 ft = 66.7 - 24.9
Depth before dropping = 42.2 ft
Read more about Sea level Elevation at; brainly.com/question/2092614
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Polynomial-An expression of two or more algebraic terms, which is the sum or difference of the several terms with having different power of the only variable. The difference between the given polynomials is

Given-
We have given two function of variable <em>x </em>and <em>y</em>


<h3>Polynomial</h3>
An expression of two or more algebraic terms, which is the sum or difference of the several terms with having different power of the only variable.
Now we have to subtract the two equations to find the difference,

Multiply the sign into the bracket to open the bracket and further solution,

Arrange the similar terms in the same groups,


Hence, the difference between the given polynomials is
For more about the polynomials, follow the link below-brainly.com/question/17822016
Answer: you got it right, it is the one that is blue highlighted.