I think is c if I’m wrong sorry
11 dollars is I think what Ken or the kids name spent IDK
9514 1404 393
Answer:
sum = ∑[n=1,5] 4^(n-4)
Step-by-step explanation:
First of all, you need to be able to describe the n-th term.
Here, we have ...
term #: 1, 2, 3, 4, 5
value: 4^-3, 4^-2, 4^-1, 4^0, 4^1
That is, the exponent of 4 is 4 less than the term number. So, the n-th term is 4^(n-4). The sum of the 5 terms shown is then ...
![\displaystyle sum=\sum_{n=1}^5{4^{n-4}}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20sum%3D%5Csum_%7Bn%3D1%7D%5E5%7B4%5E%7Bn-4%7D%7D)
<span>18.374 </span><span>r</span><span>ounded to the nearest tenth is </span><span>18.400.</span>
<span>Because 7 is after 5 so we will round to the next tenth......18.400
Hope I helped:P</span>