A student takes a part-time job to earn $9000 for summer travel. The number of hours, h, the student has to work is inversely proportional to the wage, w, in dollars per hour. (a) Write an expression for the function h. h(w)= (b) How many hours does the students have to work if the job pays $10 an hour? The student has to work hours. (c) How does the number of hours change as the wage goes up from $10 an hour to $20 an hour? The number of hours the student needs to work is Choose one (d) Use algebra to determine the effect of raising the student's wages from $w an hour to $2w an hour on the number of hours she has to work, for any value of w. h(2w) =