The library charges $0.75 a day for overdue videos and $0.12 a day for overdue books. emily pays a total of $3.48 in late fees. how many days late were the items?

The table below shows the height of a ball  x  seconds after being kicked.  what values, rounded to the nearest whole number, complete the quadratic regression equation that models the data? f(x)  =  x2  +  x  +  0based on the regression equation and rounded to the nearest whole number, what is the estimated height after 0.25 seconds?   feet

Find the measure of the interior angles of the following regular polygons: a triangle, a quadrilateral, a pentagon, an octagon, a decagon, a 30-gon, a 50-gon, and a 100-gon.

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.