Can a triangle be formed with side length of 4 inches 5 inches in 8 inches

Enter the number of complex zeros for the polynomial function f(x) = x 4+ 5x² +6

Ms. ortiz sells tomatoes wholesale. the function p(x)=-80x^2+320x-10, graphed below, indicates how much profit she makes on a load of tomatoes if she makes on a load of tomatoes if she sells them for 4-x dollars per kilogram. what should ms. ortiz charge per kilogram of tomatoes to make on a load of tomatoes?

In a column proof the right column states your reasons