Graw-Hill ALEKS ALEKS - Shannon Montgomery https://www-awu.aleks.com/alekscgi/x/Isl.exe/10_u-lgNslkr7j8P3jH-lis1WHOv/THhOPicTeSICACAKty of Review for Algebra Exam Question 18 of 40 (1 point) | Question Attempt: 1 of 1 Nicole is walking. D (t), given below, is her distance in kilometers from Newbury Heights after t hours of walking. D (t) = 11.6 -4t Complete the following statements. Let D" be the inverse function of D. Take x to be an output of the function D. log log That is, x = D (t) and t = D(xx). (a) Which statement best describes D (x)? No solution 0=0 O The amount of time she has walked (in hours) when she is x kilometers from Newbury Heights. X 5 ? The reciprocal of her distance from Newbury Heights (in kilometers) after walking x hours. O Her distance from Newbury Heights (in kilometers) after she has walked x hours. The ratio of the amount of time she has walked (in hours) to her distance from Newbury Heights (in kilometers), x. ( b ) D ( x ) = 0 ( C ) D ( 6.4 ) = 0 Continue 2022 McGraw Hill LLC C WcGraw-Hill ALEKS X ALEKS - Shannon Montgomery x + https://www-awu.aleks.com alekscgi/X/Islexe/ loju-lgNslk17j8P3jH-lis1WHQv7:Hh0j2icTeSIC4Q0KrKWOC-WYA33eOKZhinDqFfcABUyWOAj49daviKcurp62u8w81YC1Sws_f5ng.. A F Review for Algebra Exam Question 21 of 40 (1 point) | Question Attempt: 1 of 1 Shanr 8 9 = 10 11 12 13 = 14 15 16 17 18 -19 An aircraft factory manufactures airplane engines. The unit cost C (the cost in dollars to make each airplane engine) depends on the number of engines made. If x engines are made, then the unit cost is given by the function C (x) =0.5x- 190x + 32,786. How many engines must be made to minimize the unit cost? Do not round your answer. Number of airplane engines: X ? Submit Ass @ 2022 McGrew Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Ac Continue PressReview for Algebra Exam E Question 17 of 40 (1 point) | Question Attempt: 1 of 1 10 11 12 13 For each pair of functions fand g below, find f(g (x)) and g (f(x)). Then, determine whether f and g are inverses of each other. Simplify your answers as much as possible. ( Assume that your expressions are defined for all x in the domain of the composition. You do not have to indicate the domain.) (a) f(x) = 2x + 7 ( b) f (x) = 3x 8 ( x) = X - 7 g (x) - 3x X 2 f(8 (x)) - 1 f(g (x)) - 0 8 (f (x) ) - 0 8 (f (x) ) - Of and g are inverses of each other Of and g are inverses of each other Of and g are not inverses of each other Of and g are not inverses of each other Continue W