What is the amount of the average rate of change?

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

If 20% of a number is 35, what is 50% of that number?

Which of the choices shown could be used to prove that aacp=abcp ?