If sinA=3/5 what is cosB (help)

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!

Aye asap pls ! markin da brainiest too ! btw da step choices are all add, distribute, divide, n subtract

The function f(x) is shown in this graph the function g(x)=6x