Need on 3 algebra questions 13. divide the rational expressions. (7y-1)/(y2-36)÷(1-7y)/(y+6)2. add or subtract as indicated. write the answer in descending order.(3n^4 + 1) + (–8n^4 + 3) – (–8n^4 + 2) a. –13n^4 + 6 b. 3n^4 + 6 c. 3n^4 + 2 d. 19n^4 – 46. perform the indicated operations. "see picture below"

Astandard deck of cards contains 52 cards. one card is selected from the deck. (a) compute the probability of randomly selecting a diamond or heart. (type an integer or a decimal rounded to three decimal places as needed.) (b) compute the probability of randomly selecting a diamond or heart or club. (type an integer or a decimal rounded to three decimal places as needed.) (c) compute the probability of randomly selecting queen or club. (type an integer or a decimal rounded to three decimal places as needed.)