How do I answer this?


Tim began a mountain hike near Big Bear Lake, California at 9:00 A.M. By 10:30 A.M., his elevation is 7200 feet above sea level. At 11:15 A.M., he is at an elevation of 7425 feet above sea level.


a. Define variables to represent the situation.


b. Write an equation in slope-intercept form that represent Tim’s elevation since he began hiking.


c. If Tim’s altitude continues to increase at the same rate, estimate his altitude at 12:30 p.m.