The function gives the cost to manufacture x items. C(x)=50,000+ 20x + 40,000 -; x = 100 Find the average cost per unit of manufacturing h more items (i.e., the average rate of change of the total cost) at a production level of x, where x is as indicated and h = 10 and 1. (Use smaller values of h to check your estimates.) HINT [See Example 1.] (Round your answer to two decimal places.) h 10 1 Cave Well done! Excellent! Estimate the instantaneous rate of change of the total cost at the given production level x, specifying the units of measurement. C'(100) | $/item Enter a number. The function gives the cost to manufacture x items. C(x)=25,000 + 8x x2 ; x = 15,000 20,000 Find the average cost per unit of manufacturing h more items (i.e., the average rate of change of the total cost) at a production level of x, where x is as indicated and h = 10 and 1. (Use smaller values of h to check your estimates. Round your answers to five decimal places.) h Cave 10 1 x Awesome! See the rounding prompt for how many decimal places are needed. Estimate the instantaneous rate of change of the total cost at the given production level x, specifying the units of measurement. C'(15,000)= $/item Enter an exact number.