In the first week of the year, nancy saved $1. in each of the next 51 weeks, she saved $1 more than she had saved in the previous week. what was the total amount that nancy saved during the 52 weeks? $1,326

Nacy would save 1,378 dollar if she perofrm this saving plan.

Explanation:

It will be an Euler sum

In this case the last term is 52

Sn = 1.378‬

The explanation is that we can arrenge the term to generate sum of 53:

1 + 52

2 + 51

3 + 50

.......

25+28

26 + 27

In total there is 26 of this sums

53 x 26 = 1,378

If we notice 26 is half the value of n so we got:

we can also express 52 in term of n+1 achieving the Sn formula:

I LITERALLY HAvE NO IDEA BUT THANKS FOR THE POINTS

Wait nvm. I do know the answer. But Ima type it in spanish

Si no me equivoco, la respuesta sería la opción de respuesta de mi amigo. Porque la respuesta es estúpida. Que es justo. <3