can someone please join my padlet and help me with a quizz??? it should be easy for you if you're in hs

Write each of the following numerals in base 10. for base twelve, t and e represent the face values ten and eleven, respectively. 114 base 5 89t base 12

8. kelly wants to buy a magazine that is $25. later the magazine was marked up an additional 20%. what is the new price?

How many revolutions will a car wheel of diameter 28 in. make over a period of half an hour if the car is traveling at 60 mi/hr? the final answer is supposedly 21,609 but i have no idea how to get that, show work : )