q4 to 5 type-out the correct option

Question 4 (5 points) Solve the problem. A force of 1300 lb compresses a spring from its natural length of 18 in. to a length of 10 in. How much work is done in compressing it from 10 in. to 5 in.? O A) 17,000 in. . Ib O B) 0.32 in. . Ib O C) 8500 in. . Ib O D) 2000 in. . Ib Question 5 (5 points) Solve the problem. How much work is done by a 140-lb woman as she walks up 12 steps, each with a = -ft rise? O A) 3360 ft . lb O B) 420 ft . lb O C) 840 ft . lb O D) 1680 ft . lb Question 6 (5 points) Solve the problem. A stained-glass window in a church is designed to be the area between y = - x* + 2401 and y = 0 (dimensions in feet). What is the area of the window? O A) 33614 ft2 O B) 33,614 ft2 O C) 100842 ft2 O D) 134456 ft2 Question 7 (5 points)