How do you subtract rational expressions without a common denominator?

Bugs bunny was 33 meters below ground, digging his way toward pismo beach, when he realized he wanted to be above ground. he turned and dug through the dirt diagonally for 80 meters until he was above ground

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.

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a,b and c integers and a> 1