Charlie has $80 in his bank account and deposits $47 per month into his account. Avery has $54 and deposits $60 per month into her account. Enter the number of months it will take for both Charlie and Avery to have the same amount of money in their accounts.

The pyraminx is a rubik's cube-type toy in the shape of a tetrahedron. the pyraminx shown below has edges 15\,\text{cm}15cm long and vertical height h=12.2\,\text{cm}h=12.2cm. the triangle drawn with dashed lines is a right triangle. what is the distance rr? round your answer to the nearest tenth.