On a bicycle, Charlotte rides for 3 hours and is 15 miles from her house. After riding for 8 hours, she is 35 miles away.

What is Charlotte's rate? miles per hour Preview Question 6 Part 1 of 3  

How far away from her house did Charlotte start riding? miles Preview Question 6 Part 2 of 3  

Write an equation to model this situation (use $\displaystyle {d}$ for distance from her house in miles and $\displaystyle {h}$ for hours). Preview Question 6 Part 3 of 3