Answer:
A
Step-by-step explanation:
Kahn
-10a×4b+20a^2b-2ab
-40ab+20a^2b-2ab
-42ab+20a^2b Answer
I'm not sure...
Square root of 16 = 4
Square of 16 = 256
Hope this helps :)
Have a great day !
5INGH
so 90 x 9 = 980 minutes so that is the answer