Help please I need as quick as possible!

Question

asked Mar 20, 2023 158k views

1 Answer

JKraut · Answer 1 · 2023-03-25T16:29:59+0000

Answer:
$\sum^(24)_(n=1) (4n+5)$

Explanation:

This is an arithmetic series with a common difference of 4, so we can immediately eliminate the two left-hand options.

To determine which of the two options on the right is correct, we can determine the first term of each sum expanded out.

For the top right, the first term is 4(0)+5=5, which does not match the first term of the given sequence.
For the bottom right, the first term is 4(1)+5=9, which does match the first term of the given sequence.