Evaluate limit using algebra lim (* + 1 ) 13 - 1 x - O 5) Find the equation of the tangent to graph of f ( x ) . 8 7 - 3 at the point ( 5, 4 ). start by evaluating the slope of tangent at that point Determine constants "a and "b" such that f ( x ) continous for all values of n. an + 3 , if " > 5 : f ( x ) = 8 , it x = 5 (2 + bla) + a x