AdamTaurus

I'm not sure. I did it differently. I took (1-p) and distributed it into (1-p¹+p²+p³+p⁴+p⁵+p⁶).

I got: \((1-p^1+p^2+p^3+p^4+p^5+p^6)+(-p^1+p^2-p^3-p^4-p^5-p^6-p^7)\)

This is the same as: \(1-p^1+p^2+p^3+p^4+p^5+p^6+-p^1+p^2-p^3-p^4-p^5-p^6-p^7\)

I just used parenthesis for clarity.

I then combined like terms.

\(1-2p^1+2p^2-p^7\)

2p¹ is the same as 2p.

1-2p+2p²-p⁷

If you need help using it, there are tutorials on desmos.com (make sure /calculator isn't on the end to get to the homepage).

Yay!

The best way to get a percentage is by dividing the points you got by the points possible, then multiply by 100.

In this case:

\(\frac{365}{600}=0.608333\)

Then multiply by 100.

\(0.608333*100=60.8333\)

The repeating 3's aren't really important, so you got a 60.8% grade.

The graphing function on here isn't the greatest. I would probably use Desmos Graphing Calculator instead.

Thanks!

Hey, this was on my PSAT test that I took today.....

No, I don't believe so, but @Melody or @CPhill might now better.

Anything to the power of 0 is 1, so 0⁰=1

Let's make your answer a bit clearer.

\(36\sqrt{2}\)