1. DETAILS Sales. Suppose a tricycle company projects sales to increase with the function f(x) = 4x2 + 3x Using the definition of the derivative, f'(x) is equal to O 4h- + 8hx h 4h- + 8hx O lim h - 0 h 4h- + 4hx + 3h O h O 4h- + 8hx + 3h h None of the other answers lim 4h- + 8hx + 3h h - 0 h Oh -0 lim 4h2 + 8hx + 3h lim 4h- + 4hx + 3h h - 0 h Submit AnswerASK YOUR TEACHER Suppose a person travels at a rate of 5 ft/hr toward the foot of a street lamp pole 68 ft high. The height of the person is 5.8 ft. At what rate is the distance from the head of the person to the top of the street lamp changing when 87 ft from the bottom of the street lamp? Note: Round your answer to 4 decimal places. none of the other answers -0.2459 ft/hr '\\ 0.2459 ft/hr 3.9394 :/hr -4 ft/hr 3.8129 zlhr 0 ft/hr '\\ 4.0674 /hr Submit