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 representTim’s elevation since he began hiking.

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