Need hlep the answer am getin doesnt match the answer given

An object has a position given by r = [2.0 m + (4.00 m/s)t] 2 + [3.0 m - (1.00 m/s')t?] j, where quantities are in SI units. What is the speed of the object at time t = 2:00 s? O 453 mis O 5:66 m/s O 3 39 mis 6.79 m/s 7 92 mis Submit Request