Richard walks every day at a rate of 1 kilometer every 20 minutes at this rate how far can richard walk in 1 hour/

Step-by-step explanation:

Richard's speed: Distance / Time

                             Distance =  1 km

                              Time = 20 mins; convert minutes into hours

                              20 mins = __hours?

                               20/60 hours

                            1 km / (20/60)hour = 3 km/hr

Suppose Richard walk in 1  hour, so the distance he walked is :

Time * Speed = Distance = 1 hour * 3km /hr = 3 km

So Richard walked total 3 kilometres in 1 hour.

The zeros of a funtion f are found by solving the equation f(x) =0

So in our case we should solve the equation y=3x+1 =0

or

3x+1=0

3x =0-1

3x= -1

x=-1/3

The function has only one zero :(-1/3,0)