Please I need help with question 16,17,18

17. [-/1 Points] DETAILS SCALCCC5 2.5.065. Need nep? watch It MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Submit Answer Find a formula for a function f that satisfies the following conditions. lim f(x) = 0, lim f( x) = -00, f ( 6 ) = 0 , 16. [-/1 Points ] DETAILS SCALCCC5 2.5.060. x - to0 x -0 lim f ( x ) = 00 , lim f( x) = -00, X - 7 MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER f ( x ) = Find the horizontal and vertical asymptotes of the curve. You may want to use a graphing calculator (or computer) to check your work by graphing the curve and estimating the asymptotes. (Enter your answers as comma-separated lists. If an answer does not exist, enter DNE.) Need Help? Read It x3 - y = x2 - 7x + 6 Submit Answer X 18. [-/2 Points] DETAILS SCALCCC5 2.5.078. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Need Help? Read It A tank contains 4,000 L of pure water. Brine that contains 10 g of salt per liter 25 L/min. Submit Answer (a) Find the concentration of salt after t minutes (in g/L). C (t ) = 17. [-/1 Points] DETAILS SCALCCC5 2.5.065. (b) What happens to the concentration (in g/L) as t - op? MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER 9/L Find a formula for a function f that satisfies the following conditions