According to the rules of math: multiplying comes before substraction(minus) so first multiply...
90×35×12455680= 39235392000
then minus 80 from the answer you got from multiplying.
39235392000-80= 39235391920
***use calculator***
The answer to ur problem is 1.27945
3.14 is the answer
hope it helped!
It's D. because you add the powers to get the solution. y x y + y x y = y x y x y x y = y^4