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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?

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 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?

asked
User Uwe Hafner
by
7.6k points

1 Answer

3 votes

Explanation:

a_n=5n²+1

➜a_1=5(1)²+1

➜5×1+1

➜5+1

➜6

➜a_3=5(3)²+1

➜5×9+1

➜45+1

➜46

answered
User Runhani
by
7.8k points
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