How would you expand the binomial: (8x+y)^3. the items in the parenthesis are cubed. just can't make the 3 small

Can you me find the missing length. i attached an image.

Noel is hoping to make a profit (in $) on the school play and has determined the function describing the profit to be f(t) = 8t – 2654, where t is the number of tickets sold. what does the number 8 tell you?

An equation in slope-intersept form the lines that passes thought (-8,1) and is perpindicular to the y=2x-17.