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1 answer:
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Answer:
Step-by-step explanation:
A poster and 2 comics cost $7.99
(2,7.99)
A poster and 11 comics cost $16.99.
(11,16.99)
Let y be the cost of package and x be the no. of comics
We will use two point slope form :
Formula :
Substitute the values:
Hence a linear function rule that models the cost y of a package containing any number x of comic books is
Answer:
Step-by-step explanation:
The sequence is arithmetic because it is going down/up by the same number each time.
It is going down by 6.
This tells us that the common difference is -6.
The first term is 30.
The following is the explicit form of an arithmetic sequence:
where is the first term and
is the common difference.
So we have and
.
Plugging this information into our explicit formula:
Let's check it.
The first term is :
which is what the pattern reads for the first term.
The second term is :
which is what the pattern reads for the second term.
The third term is :
which is what the pattern reads for the third term.
The fourth term is :
which is what the pattern reads for the fourth term.
This rule certainly does generate the terms of our sequence as we have shown above.
The explicit form with no doubt is .