Hello I need help with my calc 2 hw

7. [-/1 Points] DETAILS SCALCET8 8.4.504.XP. MY NOTES PRACTICE ANOTHER The marginal revenue from the sale of x units of a product is 11 - 0.0004x. If the revenue from the sale of the first 1000 units is $10,100, find the revenue from the sale of the first 9000 units. $ Need Help? Read ItThe marginal cost of producing x units of a certain product is 73 + 1.4x 0.004x2 + 0.00004x3 (in dollars per unit). Find the increase in cost if the production level is raised from 1800 units to 1900 units. (Round your answer to two decimal places.) $ Video Example-l EXAMPLE 1 The demand for a product, in dollars, is p = 1400 0.2x o.oo1x2. Find the consumer surplus when the sales level is 400. SOLUTION Since the number of products sold is X = 400, the corresponding price is P = 1400 (0.2)(400) (0.001)(400)2 = Therefore, from this definition, the consumer surplus is as follows. (Round your final answer to two decimal places.) 400 400 / [p(x) P]dx f (1400 0.2x 0 0 O 400 j (240 0.2x 0.: O S lm 0 ( )(400) ll m