2(-2w-1.2+7x) what’s the answer

What is 32+4 x (16 x 1/2) -2 show 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

Need me know if option a,b,c are wrong so ik its d