8. [-/1 Points] DETAILS TANAPCALC10 2.2.048.MI. MY NOTES PRACTICE ANOTHER Find and simplify f(a + h) - f(a) ( h # 0 ) h for the following function. f(x) = 6x2 - 12x+ 1 Need Help? Read It Watch It Master It 9. [-/1 Points] DETAILS TANAPCALC10 2.2.059. MY NOTES PRACTICE ANOTHER Cost of Producing DVDs TMI, a manufacturer of blank DVDs, has a monthly fixed cost of $11,100 and a variable cost of $0.80/disc. Find a function C that gives the total cost incurred by TMI in the manufacture of x discs/month. C (x ) =10. [-/3 Points] DETAILS TANAPCALC10 2.2.064. MY NOTES PRACTICE AN Profit from Sale of Smartphones Apollo manufactures smartphones at a variable cost of V(x) = 0.000003x3 - 0.04x2+ 300x dollars, where x denotes the number of units manufactured per month. The monthly fixed cost attributable to the division that produces them is $100,000. The total revenue realized by Apollo from the sale of x smartphones is given by the total revenue function R(x) = -0.1x + 500x (0