Assume f and g are differentiable functions with h(x) = t(g(x)). Suppose the equation of the line tangent to the graph of g at the point (5,7) is y = 2x+ 17 and the equation of the line tangent to the graph of f at (7,9) is y = 3x 12. 3. Calculate h(5) and h'(5). h. Determine an equation of the line tangent to the graph of h at the point on the graph where x = 5