Find the measure of an exterior angle of a regular 50-gon.

Your friend swims on the school team. in his first four races, his times are 24.7, 23.5, 25.6, and 27.2 seconds. which time listed for his next race would make the range larger?

Find dy/dx using implicit differentiation ln(20+e^xy)=y

Which expression and diagram represent “renee biked four times as far this month as last month”?