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"

An automated water dispenser fills packets with one liter of water on average, with a standard deviation of 5 milliliter. the manual says that after a year of operation the dispenser should be tested to see if it needs recalibration. a year later a number of filled packets are set aside and measured separately. it is found that the average packet now contains about 0.995 liters. does the dispenser need calibration? explain your answer.

Use the four functions below for this question. compare and contrast these four functions using complete sentences focus on the slope and y- intercept first, and then on any additional properties of each function

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5