28. [0/1.51 Points] DETAILS MY NOTES The marginal revenue for a new calculator is given by MR = 90,000 - 30,000 (10+x) where x represents hundreds of calculators and revenue is in dollars. Find the total revenue function, R(x), for these calculators. R(x)=90000x + 30000 10+x Show My Work (Optional)? Submit Answer 29. [0/1.51 Points] DETAILS MY NOTES Cost, revenue, and profit are in dollars and x is the number of units. If the daily marginal cost for a product is MC = 4x + 130, with fixed costs amounting to $300, find the total cost function for each day. C(x) = 2x + 130x + c Show My Work (Optional)? Submit Answer