Where are you stuck?
Did I set this up right?
Yes, let me make it clearer \[\int_0^1\int_0^5( 2x+10y+20)dxdy\]
and you are correct, go ahead.
Okay so from here, I plug in 1 and 0 into the equation, right?
Not yet, you must replace the limits in, then take second integral
Soooo is it
ok? it is dy, not dx. you had done with dx
Oh right! Whoops!
So then, from here, solve with 1 & 0?
Take integral first.
OOOOOH. I get this now.
good, show your result, please
Is it 150?