I need help with #'s 7, 10, 11, 12, 15. Thank you.

Problem 7. (a) (1 pt) Graph v(x) - 22 - 7: 2 50 Problem 11. (7 pts) Let {un} and fun} be two sequences defined by 27 - An + 3 Un =- and Un = _ 2" + An - 3, for any n E N. 2 2 Determine the nth partial sum of the sequence {w,}, where W. - Un - Un, for every n e N. (b) (1 pt) Is u a one-to-one function? Justify your answer. (c) (1 pt) What is the domain of v? (d) (1 pt) What is the range of u? (e) (1 pt) Find an equation for u ), the inverse of v. Problem 12. (7 pts) Let {1, } and {y,, } be two sequences defined by 3 10 = -51 In+1 = 54n -1, and Un+1 = 247 + 6, for each nonnegative integer n. Find the sum _ yn, if it exists. (f) (1 pt) What is the domain of u-17 (9) (1 pt) What is the range of v 1? (h) (1 pt) Graph the function v 1. Problem 15. (6 pts) Find a third-degree polynomial that has integer coefficients and zeros } and 3 + i. Problem 10. (5 pts) Find the sum of the finite geometric series 3+3 /2+1+3-1/24 ... +3-21