Write the equation of the ellipse in standard form

Factor this polynomial completely. x^2-8x+12

Acircle has a diameter of 10 what is the area of the circle? use 3.14 for pi. round to the nearest hundredth

Derek purchased a new gym membership. it costs him seven dollars a month plus two dollars for every time that he visits the gym. he wants to spend less than 25 dollars a month to visit the gym. write an inequality that models the situation using the variable v for the number of visits per month. also find the maximum number of visits he can make to the gym and still keep his cost below 25 dollars a month.