What would be a model that could be used to describe this situation?

Which expression is equivalent to 5r6141 2r+st6

Find the average speed of a rabbit that runs a distance of 22 m in a time of 1.8 s .

Find the least common multiple of the expressions: 1. 3x^2, 6x - 18 2. 5x, 5x(x +2) 3. x^2 - 9, x + 3 4. x^2 - 3x - 10, x + 2 explain if possible