msdsh03
27.06.2019 •
Mathematics
Given the table below, determine if the data represents a linear or an exponential function and find a possible formula for the function.
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Ответ:
Option a is correct
given data in the table represents an exponential function
The possible formula for the function is,
An exponential function is in the form of where a is the initial value and b ≠ 0 , b> 1.
Consider any two points from the table as shown;
(0, 12.5) and (1, 13.75)
Substitute these in [1] we have;
For (0, 12.5)
where x = 0 and f(x) = 12.5 in [1]
12.5 = a
For (1, 13.75)
13.75 = ab
Substitute the value of a =12.5 we have;
13.75 = 12.5b
divide both sides by 12.5 we get;
since, y =f(x)
therefore, we have the following exponential function as:
Ответ:
ANSWER:
The 75% of 400 is 300.
SOLUTION:
Given, 75% of 400.
We have to Write and evaluate an expression to find the answer. Then we have explain how to use the model to justify the answer.
Now, let x and y be any two numbers such that, 0 ≤ y ≤ 100
Now, let us substitute the given values in above expression.
We have to do the same procedure for any given values.
Hence, the 75% of 400 is 300.