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Ne4ueva [31]
3 years ago
13

Which is a stretch of an exponential decay function?

Mathematics
2 answers:
aliya0001 [1]3 years ago
9 0

Answer:

The correct answer is C. f(x) = 5/4(4/5)^x

Just took the test.

Step-by-step explanation:


Aleksandr-060686 [28]3 years ago
6 0
The answer 

for such a question, it is required to graph each function, the answer is 
<span>f(x) =4/5(4/5 )^x 
check the attached file for proof</span>

You might be interested in
A line passes through the points (2, -4) and (4, 2). What is the equation of this line in slope-intercept form?
Aneli [31]

Answer:

A.

Step-by-step explanation:

Slope = y2-y1/x2-x1

(2,-4) = (x1,y1)

(4,2) = (x2,y2)

Slope = (2+4)/(4-2)

          = 6/2

          = 3

Y=mx+b   [Plugging (4,2) into this]

2 = 3×4 +b

2 = 12 + b

b = -10

3 0
3 years ago
Which expressions are equivalent to 10 over 10 to the 3/4 power?
lianna [129]

Answer:

10 power 10 4/4

10 power 1/4

power 3 root 10 power 4

4 ROOT 10

Step-by-step explanation:

3 0
2 years ago
Determine whether the graph represents a function . If it does represent a function , give its domain and range.
laiz [17]

Answer:

A function is a relationship that maps elements from a set (the domain) into elements from another set (the range)

Such that each element in the domain can be mapped into only one element from the range.

Let's see graphs 18, 20,24 and 30.

Remember that the axis that represents the domain is the horizontal one (usually represented with x), and the vertical axis represents the range (usually represented with y)

18) Here we can see that the point x = 1 his mapped into two different values of y.

we have the pair (1, 2) and the pair (1, -3)

And something similar happens for x = 2.

Then we can conclude that this is not a function.

20) Here we have a linear relationship.

Linear relationships are almost always functions, the only case when these are not functions is when the linear equation is something like x = a.

Linear equations can be written as:

y = a*x + b

So x can be any value, and thus y also can be any value.

Then the domain is the set of all real numbers, and the range is the set of all real numbers.

24) Here we have a quadratic function whose arms go down.

This is a function, now let's see the domain and range.

Quadratic functions are written as:

y = a*x^2 + b*x + c

There is no value of x can cause some problem in this equation, then this function works for all values of x, then the domain is the set of all real numbers.

Now, let's look at the graph.

We can see that the function goes up, reaches a maximum, and then goes down again.

Then the range will be the set of all the values smaller than the maximum we can see in the graph, this is:

y ∈ (-∞, 15]

or simply:

y ≤ 15.

30) Here again, we can see that for x = 0 there are two different values of y.

the same happens for x = -1, x = -2, and a lot of other values.

Then this is not a function, because it is mapping values of the domain into different values of the range.

3 0
3 years ago
Which graph decreases, crosses the y-axis at (0,-7), and then remains constant?
sergey [27]

Answer:

A.Graph B

Step-by-step explanation:

it decreases to a y of (0,-7) and then stays constant at -7

Hope this was helpful

7 0
3 years ago
The pizza shop sells artwork by local artists. For each piece it sells, the shop receives a 15 percent commission. The most expe
Margarita [4]

Answer:

The 15 percent commission is what the shop received.

Step-by-step explanation:

It said that the most expensive piece it ever sold was 225

not that the most money they made is 225

5 0
3 years ago
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