Keeping the properties of exponents in mind to what power must your raise the expression 7 1/2 to get 7 as a result

What are the soultion(s) to the quadratic equation 40- x^2=0

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

You just purchased two coins at a price of $670 each. because one of the coins is more collectible, you believe that its value will increase at a rate of 7.1 percent per year, while you believe the second coin will only increase at 6.5 percent per year. if you are correct, how much more will the first coin be worth in 15 years?