Which graph represents the function of f(x)=4x^2-4x-8/2x+2

Ihave trouble finding the nth term of a linear sequence

It says factor each expression 49x-28?

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