## Answers by Edwin R.

If X represents the larger number, and Y the smaller number, and the differnce between them is 8, then X - Y = 8.  If nine times the larger   number, or 9X, is equal to 15 times the smaller number, or 15Y, then 9X = 15Y.   You could also write this as 9X - 15Y =0 . Depending...

Hi Hannah,   If g(x) = 2x + 2, this means it takes an input value, doubles it, and then adds 2.  The inverse will do the opposite, in the opposite order.     So the inverse will first do the opposite of adding 2, so it subtracts 2, or x - 2.  Then it...

I believe this isn't an absolute value function, but rather a greatest integer function.  Can you clarify for us, is this absolute value or greatest integer?

Lets start with encoding your letters. Some classes will encode directly from the position in the alphabet, 1 thru 26. So A is 01, T - 20, C- 03, etc. Others will encode using 0-25, so A is 0, B is 1, C is 2, etc. Only you will know how your teacher or class does it. I’ll assume 1-26. RSA uses a...

Do you mean -6a^4+4a^3-2a^2 = 0, because your original expression had no equal sign.