21-22 need help asap

Instructions: You may write on the exam paper. You may use extra paper, but it must be turned in with the exam. There is only one correct answer for each question. Mark your answers on the answer sheet that has been provided. 21. The graphs below show the derivatives of f (x), g(x), and h(x). Use these derivative graphs to determine if any of the functions f(x), g(x), or h(x) have a relative maximum on the interval (-1, 1). f' (x ) g'(x) h' (x) a) f(x) only b) g(x) only c) f(x) and g(x) d) h(x) only e) f(x) and h(x) 22. The area of a square is increasing at a constant rate of 6 feet per second. What is the rate of increase in each side of the square at the instant when the perimeter of the square is 32 feet? a) 96 ft/sec b ) - ft / sec c ) aft / sec d) 512 ft/ sec e) 3 ft/sec