F(x) = 3x3 – 2x2 + x - 4 at x = -3

Evaluate 4 a for a = 5 2/3 . express your answer in simplest form.

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. how many hours after the truck's departure will the two meet?

Plz hurry evaluate the expression a+b where a=8 and b=19