CalculatorUser

Yes thank you, Melody, I never thought that my answer could be negative. I am lucky that the problem only had one answer.

Next time in these problems, I will make sure there are no negative answers

In these problems, I always try to match it to the form y=kx.

You can do this by isolating k

I couldn't find any way to do randint on this site.

Hint: Use formula \(\frac{-b}{2a}\).

This is used to find the vertex, it should be trivial

 .

I personally have a big problem remembering to distribute negatives. This has caused me to fail a "few" problems...

in these problems just take the square root of both sides. Remember it can be both positive and negative.

It is very simple

Notice the subtraction sign

That actually is a "multiply by negative 1"

So distribute the negative 1 like you normally distribute.

Then remove parentheses and combine like terms. Try it.

Good job Hectitar! I was stumped and now I know how to do this!

Ah! I realized that the first terms starts as 1. So using the same strategy.

If we count up 5 in the pattern, we will end up with the last digit of term 36.

So we count back 1 in the pattern

the correct answer is 8!