Find the sum without the use of a number line.    ***Complete and correct step by step work must be shown on paper with ANSWER BOXED IN.  Then upload picture of work for me to grade (must be jpeg or pdf file upload). +

Perform the indicated subtraction.    ***Complete and correct step by step work must be shown on paper with ANSWER BOXED IN.  Then upload picture of work for me to grade (must be jpeg or pdf file upload).- –

Factor completely.      ***Complete and correct step by step work must be shown on paper with ANSWER BOXED IN.  Then upload picture of work for me to grade (must be jpeg or pdf file upload). 7×2 – 7x – 42

Subtract the polynomials.(9×7 + 15×5 – 3) – (5×7 – 11×5 + 7)

Multiply by using the rule for the square of a binomial.      ***Complete and correct step by step work must be shown on paper with ANSWER BOXED IN.  Then upload picture of work for me to grade (must be jpeg or pdf file upload).(8x – 1)2

Find the product.(6x – 1)(x2 – 4x + 1)

A protein has a protein that has a tyrosine and lysine. All of the following modifications may occur on this protein EXCEPT

In the ribonuclease experiment, 

A protein has a lysine. All of the following modifications may occur on this protein EXCEPT

Which modification on a lysine is involved in transcription, nuclear transport, apoptosis, and cell cycle progression, but not protein degradation?