2x3y + 18xy − 10x2y − 90y part a: rewrite the expression so that the gcf is factored completely. part b: after factoring out the the polynomial expression completely using group factoring. show the steps of your work.

An object is accelerating at a constant rate. its velocity in feet per second as a function of time in seconds can be modeled by the linear function v(t) = 2.5t. what does the dependent variable represent for this function? a) acceleration b) distance c) slope d) velocity