The kind of model that best describes this set of data is linear relationship. (Option A)
A linear relationship or linear association refers to a statistical term which is used to describe a straight-line relationship between two variables. Linear relationships can be expressed either in a graphical format or as a mathematical equation of the form y = mx + b. In the given case, if the set of data is plotted on the graph, it will show a straight-line. It can also be determined by calculating the slope between a few points and see if the slope is the same. In the attached graph, it can be seen that the data is linear.
Note: The question is incomplete. The complete question probably is: Which kind of model best describes this set of data in the table (attached)? A) Linear B) Quadratic C) Exponential
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The cost of one sandwich is $5.7
<h3>How to determine the cost of one sandwich?</h3>
The given parameters are:
Order = 3
Tax = 8% off
Total cost = $20.66
Tip = $5
The cost of one sandwich is calculated as:
Total cost = Order * Cost of One (x) * (1 - tax) + Tip
This gives
20.66 = 3 * x * (1 - 8%) + 5
Subtract 5 from both sides
15.66 = 3 * x * (1 - 8%)
Make x the subject
x = 15.66/[3 * (1 - 8%)]
Evaluate
x = 5.7
Hence, the cost of one sandwich is $5.7
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Answer:
d
Step-by-step explanation:
Solution by substitution method
y=7x+8
∴y-7x=8
and y=x+20
∴y-x=20
Suppose,
-7x+y=8→(1)
and -x+y=20→(2)
Taking equation (1), we have
-7x+y=8
⇒y=7x+8→(3)
Putting y=7x+8 in equation (2), we get
-x + 7x + 8 = 20
6x = 20-8
6x = 12
x= 12 / 6
x = 2
substitute for x in equation (3)
y = 7(x) + 8
y = 7(2) + 8
y = 22
The answer is C. A fraction is basically another way of writing division, and six divided by three is two.
Answer:
Step-by-step explanation: