Also explain im not understanding ( explain 5-7)

It says factor each expression completely 8y+48

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!

M.xyz =radians. covert this radian measure to its equivalent measure in degrees.