Question

i need help with an algebra 2 problem, patterns and expressions.

Answer 1

Ask

Answer 2

the problem is number 15, dont give me the answer right away, i want to understand it

Answer 3

ok...look at the first column..how many does it have?

Answer 4

3

Answer 5

And what about the second one?

Answer 6

7

Answer 7

so, it seems that 4 were added...if you add 4 to the second column, do you get the number in the third column?

Answer 8

what do you mean like are you asking how many are in the second column or no

Answer 9

i mean the third column

Answer 10

I mean...we can tell from the pattern that to move from one term to the consecutive next term, we add 4, right?

Answer 11

yes

Answer 12

so, with that understanding in mind, can you form an expression?

Answer 13

would it be 4n in the nth figure?

Answer 14

4n-1?

Answer 15

yes...4n-1 is correct! :)

Answer 16

thanks! :)