Which value is equivalent to x-7/7-x

Phillip had some bricks. he stacked them in 6 equal piles. which expression shows the number of bricks phillip put in each pile? let the variable m stand for the unknown number of bricks. m + 6 m÷6    m−6    6m

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?

What function has a range {yly< 5}? question on picture above^