7. [-/1 Points] DETAILS HARMATHAP12CR 9.1.033. MY NOTES ASK YOUR TEACHER Use properties of limits and algebraic methods to find the limit, if it exists. (If the limit is infinite, enter 'co' or '-co', as appropriate. If the limit does not otherwise exist, enter DNE.) 9 lim f(x), where f(x) = if x 5 -1 X x - -1 5x3 -x - 4 ifx > -1 Submit Answer 8. [-/1 Points] DETAILS HARMATHAP12CR 9.1.035. MY NOTES ASK YOUR TEACHER Use properties of limits and algebraic methods to find the limit, if it exists. (If the limit is infinite, enter 'co' or '-co', as appropriate. If the limit does not otherwise exist, enter DNE.) lim x- + 10x + 25 x-4 X - 4