two bags and four hats cost $100 in all. three bags and seven hats cost $164 in all. what is the cost of 1 hat?
1 answer:
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-1 - (-7) = 6
5 - (-1) = 6
11 - 5 = 6
The common difference is 6.
If you add 6 to a term, you get the next term.
5 - (-1) = 6
11 - 5 = 6
The common difference is 6.
If you add 6 to a term, you get the next term.