If the flea starts at 1 and jumps 4 units to the left, where does it ends up? How far away from 0 is this?
1 answer:
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We can manipulate the arithmetic sequence formula to solve this problem.
Let's look at
where 
is the 
term, 
is the first term, 
is the number of terms, and 
is the common difference. We already know that is equal to 
, is equal to 
, and 
is equal to 
. This therefore leave us with only the common difference to solve.
Manipulating the formula we can arrive at the answer:
ANSWER: The common difference is 8.
Let's look at
Manipulating the formula we can arrive at the answer:
ANSWER: The common difference is 8.