Answer:

Step-by-step explanation:
We begin with 
First, lets turn this mixed number into an improper fraction/

Now that we have this, we can square it and then simplify it.

You're trying to find constants

such that

. Equivalently, you're looking for the least-square solution to the following matrix equation.

To solve

, multiply both sides by the transpose of

, which introduces an invertible square matrix on the LHS.

Computing this, you'd find that

which means the first choice is correct.
Answer:
The interest is $3120 and the amount is $15120.
Step-by-step explanation:
Hope this helped
:)
Answer:
it is 500500
Step-by-step explanation:
learned this fact a few years ago and it stuck with me.