Practice:
Jose lives about 30 kilometers from office. For one week, he keeps record of time it
takes him to go to the office as shown in Table A. He wanted to know his average speed
based on the time he recorded. Can you help him?

Table A. Jose' Trip to Office

-Days
1.Monday
2.Tuesday
3.Wednesday
4.Thursday
5.Friday
6.Any day

-Time (Hours)
1. 0.5
2. 0.75
3. 0.6
4. 0.7
5. 1
6. n

-Speed (kph)
1.____
2.____
3.____
4.____
5.____
6.____

a.Write a formula relating speed, time, and distance.

b. Use the formula in (a) to determine Jose' average speed each day. Record
the results in the last column of Table A.

c. If t is time and s is the average speed, write the equation for a function that
contains Jose' average speed when the input is time.

d. Give the domain of the function you have in (c).

e. Use a graphing calculator to describe the graph when the input is very close to
zero. Interpret this behavior in terms of Jose' time and average speed.​