Find an expression which represents the difference when (-6x + 5) is subtracted from (-2 – 8) in simplest terms.

Will used 20 colored tiles to make a design in art class. 5/20 of his tiles were red. what is an equivalent fraction for the red tiles?

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .