Solve the system of equations 4x-5y=-64x−5y=−6 and -6x+7y=12−6x+7y=12 by combining the equations.

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?

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.

The function below show how much jayna and hannah charge for babysitting. which statement best compares the two plants?