What is the value of y? i think the hypotenuse is 8 and if it is, am i supposed to do c^2 - b^2 = a^2?

Me! 50 points! why does when we come home, our door is unlocked and there is grease on the door knob, me solve this , and i don't know what category this goes under

If $740 is invested at an interest rate of 11% per year and is compounded continuously, how much will the investment be worth in 7 years? use the continuous compound interest formula a = pert.

If the simple annual interest rate on a loan is 6, what is the interest rate in percentage per month?