Question

A store has sales of $500 in their first month. If sales increase at a rate of $10 each month, they can be modeled by this equation:
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Use summation notation to model and evaluate the sales for the first ten years. Explain your steps.

Answer 1

this is an arithmetic series with
a = 500
d = 10
look at
https://www.mathsisfun.com/algebra/sequences-sums-arithmetic.html