What is the value of the discriminant of f in -4x^2+10x-8

For which pair of functions is (gof)(a)=|a|-2?

On saturday a souvenir shop had 125 customers.sixty four percent of the costumers paid with a credit card. how many costumers paid with cash?

Anna is constructing a line segment that is congruent to another segment ab. for the construction, which tool should be used to mesure segment ab