Brent Pickett borrowed ​$6000 from his brother Dave. He agreed to repay the money at the end of 2 ​years, giving Dave the same amount of interest that he would have received if the money had been invested at 2.25​% compounded quarterly. How much money did Brent repay his​ brother?

The length of a rectangular board is 3 feet less than twice its width. a second rectangular board is such that each of its dimensions is the reciprocal of the corresponding dimensions of the first rectangular board. if the perimeter of the second board is one-fifth the perimeter of the first, what is the perimeter of the first rectangular board?

Ahyperbola centered at the origin has a vertex at (-6,0) and a focus at (10,0). what are the directrices?

Pl e a s e h e l p! i can’t find x in #28 for my homework