1. Type each step (or write it on the side of the problem on your paper) that you used to solve the problem using words, example: "first, I substituted x with (x+h) for all of the x variables. Then, I..." ** Make sure to check your answer. All of the solutions are provided in the last pages of the review.

3) The cost function for a product is given by C(n) = n' + 6n + 640, where n is the number of units produced and sold and C(n) is the cost in dollars. [3.2, 5.2] a) What is the domain of this function in context of the application? b) Is the function one-to-one for the domain in part (a)? Explain. ROCKSWOLD: COLLEGE ALGEBRA with MODELING AND VISUALIZATION, 6" Edition MATH 121G Final Review Fall 2019 pts Find the inverse of this function for the domain in part (a). Show work. (Hint: Use completing the square). d) Use the inverse function in part (c) to find how many units are produced and sold if the cost is $2,312. Show work. 9) Graph by hand. [2.4, 4.2]: must create (2 -1, x 1 ( ) ) f ( x ) = 1 x - 1, x