Solve the formula step by step for the indicated variable.

t=3u/e, for u

How do i work this problem out using the equation a=pe^rt

Dakota earned $7.50 in interest in account a and $18.75 in interest in account b after 15 months. if the simple interest rate is 4% for account a and 5% for account b, which account has the greater principal? explain. to make it a little easier, there is an image. good luck!

If there are 3.281 feet in 1 meter, how many inches are in one centimeter