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muminat
2 years ago
5

PLS HELP PLS FAST I NEED HELP

Mathematics
1 answer:
ki77a [65]2 years ago
5 0

Answer:

C

Step-by-step explanation:

I need o answer 7 questions to ask a question, I hope it's right I don't want to steal points

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Which exponential function is represented by the values in the table?
Goryan [66]

Answer:

\displaystyle f(x)=4\cdot\left(\frac{1}{2}\right)^x

Step-by-step explanation:

<u>Exponential Function</u>

The exponential function can be written with the general equation:

f(x)=A\cdot r^x

Where A is the value when x=0 and r>0 is the ratio. If r is greater than 1, the function is increasing, if r is less than 1, the function is decreasing.

The table shows the relation between values of x and values of the function y. Note that as x increases (one by one), y decreases with a ratio of 1/2. Only the last two choices have ratios of r=1/2. We only have to test which one of them has the correct value of y=4 when x=0.

Substituting in the third function:

\displaystyle f(x)=4\cdot\left(\frac{1}{2}\right)^x

\displaystyle f(0)=4\cdot\left(\frac{1}{2}\right)^0

f(0) = 4

This gives the correct value of f(0)=4.

Substituting in the fourth function:

\displaystyle f(x)=\frac{1}{2}\cdot\left(\frac{1}{2}\right)^x

\displaystyle f(0)=\frac{1}{2}\cdot\left(\frac{1}{2}\right)^0

f(0) = \frac{1}{2}

This choice is wrong

Correct choice:

\boxed{\displaystyle f(x)=4\cdot\left(\frac{1}{2}\right)^x}

8 0
3 years ago
Which statement is true about the value of StartAbsoluteValue 6 EndAbsoluteValue?
liubo4ka [24]
Can you give more information about this question?
3 0
3 years ago
Read 2 more answers
Jane is painting her room. She mixes 3 pints of blue paint with 4 pints of red paint to get her desired color. Which equation ca
Lady bird [3.3K]
Well if she added three blue and four red originally, and is now using 16 red then we would divide 16 by the original four. Which means to get the number of blue we are gonna end up multiplying by four. So three times four is twelve. Which means she would use 12 blue and 16 red to get the same color she got with 3 blue and 4 red earlier. The equation, lets use x for blue and y for red, would be 4(3x + 4y) = desired color
5 0
2 years ago
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boxes that are 12 inches tall are stacked next to boxes that are 18 inches tall. what is the shortest height as which the two st
olga55 [171]
18 (goes down): 17, 16, 15
12 (goes up): 13, 14, 15

The shortest height at which the two stacks of boxes will be the same height is 15. 

Hope I was able to help!
6 0
3 years ago
A lumberyard will deliver wood for $7 per board foot plus a delivery charge of $10. Find a function C(x) for the cost (in dollar
Paladinen [302]

Answer:

C(x) = 7x + 10

Step-by-step explanation:

If the delivery charge is $10 for any number of board feet ordered.

If the delivery charge is $10 for each board feet ordered, the function would

be C(x) = (7 + 10)x = 17x

4 0
3 years ago
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