When each side of an inequality is multiplied or divided by a negative number the original inequality sign stays the same true or false

Solve each equation using the quadratic formula. find the exact solutions. 6n^2 + 4n - 11

Use the quadratic function to predict f(x) if x equals 8. f(x) = 25x2 − 28x + 585

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?