Common Difference/Ratio
Find the common ratio:
6,54,486,...
9
Write an explicit formula for the following sequence:
11,15,19,....
an = 11 + 4(n-1)
Find the 63rd term of the arithmetic sequence −1,5,11,...
371
In an arithmetic sequence, the first term is equal to 5 and the fourth term is equal to 17. What is the common difference of the arithmetic sequence?
d = 4
I have four legs but no tail. Usually, I’m heard only at night.
Frog
Find the common difference:
−11,−17,−23,...
-6
Write an explicit formula for the following sequence:
4,1,−2,....
an = 4 - 3(n-1)
Find the 98th term of the arithmetic sequence 8,24,40,...
1560
In an arithmetic sequence the first term is equal to 10 and the fifth term is equal to 46. What is the common difference of the arithmetic sequence?
d = 9
I’m not a friend of paper and you will want to keep me away from small children.
Scissors
Find the common ratio:
−6,−48,−384,...
8
Write an explicit formula for the following sequence:
3,−3,−9,....
an = 3 - 6(n-1)
Find the 15th term of the geometric sequence 3,−6,12,...
49,152
In a geometric sequence, the first term is equal to 3 and the third term is equal to 192. What is the common ratio of this geometric sequence?
r = 8
If you need to draw a line, use this item to make it straight.
Ruler
Is the following sequence arithmetic, geometric, or neither:
4, -32, 256, -2048, 16383, ...
neither
Write an explicit formula for the following sequence:
6,−12,24,....
an = 6(-2)^n-1
Find the 13th term of the geometric sequence 4,−16,64,...
67,108,864
In a geometric sequence, the first term is equal to 8 and the fourth term is equal to 64. What is the common ratio of the geometric sequence?
r = 2
This item is used to find the value of a correlation coefficient.
Calculator
The second term of an arithmetic sequence is -20 and the fifth term is -47. What is the common difference?
-9
Write an explicit formula for the following sequence:
32,−16,8,....
an = 32(-1/2)^n-1
65,536 is what term of the following geometric sequence: 4,8,16,...
15th term
Mr. Valentino has agreed to donate $100 to Roslyn Middle School for a library renovation. In addition, he will donate $2 for every student that completes their Delta Math HW on a particular night. If you create an explicit formula based on money raised from students completing their HW, what would be the value of a1 in this situation?
102
I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me.
Fire