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6. DETAILS SCALCET9 6.4.003. MY NOTES ASK YOUR TEACHER A variable force of 7x-2 pounds moves an object along a straight line when it is x feet from the origin. Calculate the work done (in ft-lb) in moving the object from x = 1 ft to x = 12 ft. (Round your answer to two decimal places.) ft - lb7. DETAILS SCALCET9 6.5.005. Find the average value gave of the function g on the given interval. 8 g(t) = 1+ +2 ' [0, 9] gave =8. DETAILS SCALCET9 6.5.019. 14 The linear density p in a rod 3 m long is X + 1 kg/m, where x is measured in meters from one end of the rod. Find the average density Pave (in kg/m) of the rod. Pave kg/m9. DETAILS SCALCET9 7.1.005.MI. Evaluate the integral. (Use C for the constant of integration.) test dt10. DETAILS SCALCET9 7.1.024. Evaluate the integral. (Use C for the constant of integration.) e- cos(70) de