Solve the problem. The graph shows the height h (in meters) of a roller coaster t seconds after the ride starts. h Height (ft) 100 80 60 40 20 0 30 Time (sec) a. Over what interval(s) does the height increase? b. Over what interval(s) does the height decrease? 10 20 40 50 60 70 Write the domain in interval notation. f(x) = 16x +100 Write the domain in interval notation. f(x) = x-4 x-5 Determine the x- and y-intercepts for the given function. B(x) = 7x + 3