If a sequence has a first term of $$ a_1=10 $$ , and a common difference $$ d=5 $$ , Write the formula that describes this sequence. Use the formula of the arithmetic sequence.

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Uniteasy Admin · Accepted Answer

Since we know the values of the first term, $$ a_1=10 $$ , and the common difference, $$ d
=5 $$ , substitute these values in the arithmetic formula.
$$ a_n=a_1+(n-1)d $$
We get,
$$ a_n=10+(n-1)5 $$
$$ =5n+5 $$

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