Simple interest is A=P(1+rt) so it would actually be $1008 as the final account balance so in interest she would have aquired 1008-900=$108
<u>Step-by-step explanation:</u>
<u>Here </u> ,There are no options given to choose which number is a cube root between 7 & 8 . So below provided answer is way to choose which numbers have cube root between 7 & 8 .
Here , We have to find that Which number has a cube root between 7 and 8 . Let's find out :
We know that ,
![\sqrt[3]{343} = 7\\\sqrt[3]{512} = 8](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B343%7D%20%20%3D%207%5C%5C%5Csqrt%5B3%5D%7B512%7D%20%20%3D%208)
So , the number which have cube root between 7 & 8 will surely lie in between of 343 & 512 . Suppose the numbers which which have cube root between 7 & 8 are
, So these numbers lie between 7 & 8 i.e.
⇒ 
Therefore, all the numbers which lies between 343 and 512 or
, have a cube root between 7 & 8 .
Please make your question more specific

23 stones will be needed (you have to round up, since you can't have a fraction of a stone)
You have ridden 55% of the way.
You have to set up a proportion 44 over 80 is equal to x over 100 (x is what we are trying to find - the percentage you have ridden). Then use cross products and multiply the 44 by 100 to get 4400 and divide that by 80 to get 55. So the answer is 55 so 55%.
55%.
Hope this helps!
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