2. what is the missing number
pattern 1, 3, 9, -, 81?

The missing number is 27

Step-by-step explanation:It is a matter of spotting the relationship if you can. If not obvious you will need to experiment to find what type of sequence it is; geometric or arithmetic.

Observe that there is a connection of 3 in the numbers 1,3,9 in that

1

×

3

=

3

Lets experiment with that for a moment!

If we apply the same rule to 3 what will we get?

3

×

3

=

9

which is correct.

Ok. lets apply the same rule yet again!

9

×

3

=

27

Using 27, if we apply the rule once more and get 81 we have found the correct 'rule' for this sequence.

27

×

3

=

81

'

This works so the missing number is 27

y > 1/3x

y < = -x + 4

hope this : )

step-by-step explanation:

ok one would be money, and the other would be refreshments or something similar. if each bag of popcorn is 5.00 and each drink is half of that that means drinks are 2.50 the proper way to do that would to look and see how much of each you can buy without exceeding a limit of 30.00