The function r(n) = 5n² + 1 represents the value of the nth term in a sequence. What is the sum of the 1st and 3rd terms of the sequence?

asked Nov 16, 2022 127k views

4 votes

The function r(n) = 5n² + 1 represents the value of the nth term in a sequence.

What is the sum of the 1st and 3rd terms of the sequence?

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3 votes

Explanation:

a_n=5n²+1

➜a_1=5(1)²+1

➜5×1+1

➜5+1

➜a_3=5(3)²+1

➜5×9+1

➜45+1

Runhani answered Nov 20, 2022

5.8k points

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