They ask for the evaluated expression:
[tex]8x-7[/tex]When x=7
So, actually, we will answer a number and not an expression. Now, to find this number we're going to replace all the places that appear x in the original expression, with the given value of x.
Then, we have:
[tex]8(7)-7[/tex][tex]56-7[/tex][tex]49[/tex]So, we can conclude that the correct answer is 49.
