+0  
 
0
55
4
avatar+39 

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
avatar+373 
+2

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
avatar+39 
+1

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
avatar+373 
+2

Yes, A is for 14. and B is for 15. :)

MobiusLoops  Feb 25, 2021
 #3
avatar+373 
+2

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

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