Raymond clams that 7^9/7^5=7^4. Rose argues that 7^9/7^5=7^45. Which one of them is correct? Use the properties of exponents to justify your answer

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

Which type of graph would allow us to quickly see how many students between 100 and 200 students were treated?

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)