Evaluate the following expression.
1/5^-2

An astronaut drops a rock into a crater on the moon. the distance, d(t), in meters, the rock travels after t seconds can be modeled by the function d(t)0.82. what is the average speed, in meters per second, of the rock between 5 and 10 seconds after it was dropped?

Write an algebraic expression for the word expression the quotient of c and 8

What is the result of adding the system of equations? 2x+y=4 3x-y=6