Please help!! G(-9) =?

Which of the following graphs could represent a cubic function?

David and alton are training for a race. they spend 35 minutes stretching and then go on a 5 mile practice run. david runs at a pace of 7 min/mile. alton runs at a pace of 8 min/mile. write an equation for each runner that shows the total length of their workout. then solve each equation showing your work

Which statement is true about the discontinuities of the function f(x) = x-5/ 3x^2-17x-28