Earl runs 75 meters in 30 seconds how many meters does earl run per second

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2

Given the following linear function sketch the graph of the function and find the domain and range. ƒ(x) = -5x + 4

The floor of a building consists of 3000 tiles which are rhombus shaped and each of it's diagonals are 45 cm and 30 cm in length. find the total cost of polishing the floor, if the cost per m² is rs. 4.