Which choice best summaries the passage?

The distance d that a car can travel in a certain amount of time t can be found by multiplying the rate of speed r by the travel time. if a car has already travel 4 miles, the formula for the total distance travel is d= rt + 4. which of the following gives the value of r, in terms of d and t?

Find the area of shaded region z=-0.89

What did pavlov initially notice about the animals in his original research after conditioning took place?