3. Suppose an object increases its speed from 4.20 m/s to 5.00 m/s over 115 m. How long does this increase in speed take?

By definition of average velocity,

If this object is under constant acceleration, then average velocity is also equal to the average of the initial and final velocities:

Then the time it takes for the object to travel 115 m with this average velocity is

dopamine..

"it was found that some people who were taking the drug l-dopa to raise their levels of dopamine were developing schizophrenic-like symptoms supporting research a strength of the dopamine hypothesis is that there are many studies which have shown support for the neurochemical explanation."

it has to be b, about 97 percent.