Mathematician

I assume 5% interest is out of $50... so that is 5% of $50 or 5% x $50.

5% can be turned into .05, because percent are numbers out of 100, and $${\frac{{\mathtt{5}}}{{\mathtt{100}}}} = {\frac{{\mathtt{1}}}{{\mathtt{20}}}} = {\mathtt{0.05}}$$.

Then we multiply 0.05 by 50: $${\mathtt{0.05}}{\mathtt{\,\times\,}}{\mathtt{50}} = {\frac{{\mathtt{5}}}{{\mathtt{2}}}} = {\mathtt{2.5}}$$

Our final step is adding that to our orugunal total: $${\mathtt{50}}{\mathtt{\,\small\textbf+\,}}{\mathtt{2.5}} = {\frac{{\mathtt{105}}}{{\mathtt{2}}}} = {\mathtt{52.5}}$$

$52.50.

$${\frac{{{\mathtt{n}}}^{{\mathtt{2}}}}{{\mathtt{n}}}}$$ = $${\frac{{\mathtt{n}}{\mathtt{\,\times\,}}{\mathtt{n}}}{{\mathtt{n}}}}$$ Then you take n from the top and bottom, and it simplifies to $${\mathtt{n}}$$.

By "answer", I assume you mean solving for x or y.

8x + y = -16 can be anything, because there are two variables. To be able to simplify and get an answer, there can only be one.

What are you having trouble with?

Isn't the question asking the probability if only two numbers were picked? As in: Two numbers are picked in total, not two by each?

Thank you, Melody.

At certain times I do... sometimes though, it's just about finding the fastest/easiest method for me.

Very clever, Melody. I was going to answer a fraction or a decimal, but negative numbers are even smaller.

I assume you mean "pi". Using the site calculator, we get:

$${\sqrt{{\mathtt{\pi}}}} = {\mathtt{1.772\: \!453\: \!850\: \!905\: \!515\: \!9}}$$

The elipses prevent me from fully understanding the problem. Did you add the elipses yourself, or were those already in the problem?