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# 2 funstion questions pls help fast

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can i pls get the explanation too with the question? this is a review so if i don't know how to do it i can't do problems like it. thank you

Feb 25, 2021

#1
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This is for problem 1:

An easy way to determine if a sequence is geometric or arithmetic is by seeing if it is multiplied or divided by a number (geometric) or added or subtracted by a number (arithmetic).

A. The numbers in the sequence are divided by a number, the number being 2. This means it is geometric!

B. The numbers in the sequence have a number added to them, the number being 4. This means it is arithmetic!

Feb 25, 2021
#2
+39
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thank you soo much! just to clarify this is for number 14. just to make sure, if i understood correctly, A is for the first one and B is for the second on, right? thank you

winner08  Feb 25, 2021
#4
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Yes, A is for 14. and B is for 15. :)

MobiusLoops  Feb 25, 2021
#3
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This is for problem 2:

a. Plug in some values for $$f(x)=6x-4$$

 1 2 2 8 3 14 4 20

This matches to 19.

b. If you are wondering how to solve this function, here's how:

Since you already know what f(1) is, you can start solving for f(2)!

$$f(2)=6 * f(2-1)= 6*f(1)= 6*2= 12$$

By doing this two more times, you can see this matches to 16.

c. Plug in some values for

 1 2 2 $$\frac{1}{3}$$ 3 $$\frac{1}{18}$$ 4 $$\frac{1}{108}$$

You see this function matches to 18.

By this you can match d. to 17.

Matches:

16 ---> b.

17---> d.

18---> c.

19---> a.





Feb 25, 2021