Could you solve the questions please? THANK YOU SO MUCH!!!

18. [214 Points] DETAILS PREVIOUS ANSWERS Suppose that the cost C (in dollars) of removing p percent of the particulate pollution from the smokestacks of an industrial plant is given by 6900p C : (m mup (a) Is C(p) undefined at any pvalue? If so, what value? {If an answer does not exist, enter DNE.) p = v (b) What is the domain of C(p) as given by the equation? (Enter your answer using interval notation.) ;)g;100 J' (c) What is the domain of (703) in the context of the application? (Enter your answer using interval notation.) ;)==100 )( 19. [-/11 Points] DETAILS MY NOTES PRACTICE ANOTHER The postage charged for first-class mail is a function of its weight. A postal service uses the following table to describe the rates. Weight Increment Rate ($) First ounce or fraction of an ounce 0.55 Each additional ounce or fraction 0.21 (a) Convert this table to a piecewise defined function that represents postage for letters weighing between 0 and 4 ounces, using x as the weight in ounces and P as the postage in cents. if 0 4:00PM- D(t) and interpret the meaning of this limit in the context of this situation as a complete sentence. Go to Google Finance and look at the Dow Jones. First screen shot what your day looks like and give the left-sided limit at the11.111!) 13,523 nilm. 1m, warming-$2 10.7\") 10.6\"] 10 am. Noon 2pm. 4pm. Source: Google Finance Estimate limm_,g:3(mur.4r+ D(t) and interpret the meaning of this limit in the context of this situation as a complete sentence. Estimate limm_,4:mpM_ D(t) and interpret the meaning of this limit in the context of this situation as a complete sentence. Go to Google Finance e and look at the Dow Jones. First screen shot what your day looks like and give the left-sided limit at the time you are reading it. Then, look at the DJIA over time (you are able to look at daily, 5 day, 1 month, Year to Date, etc) and explain the limit of the DJIA as time is ever increasing. Google Finance Q INDEXDJX: .DJI X MARKETS US Europe Asia Currencies Crypto Futures Dow tumbles 876 points and stocks enter bear market on worries of drast... . CNN Dow Jones -2.79% S&P 500 3.88% Nasdaq 4.68% Russell 4.76% VIX +22.59% V 30,516.74 3,749.63 -151.23 V 10,809.23 V T -876.05 -530.80 1,714.59 -85.69 34.02 +6.27 DJI . INDEX + Follow Share Dow Jones Industrial Average 30,516.74 $ 11.27% -3,877.01 1Y Index Jun 13, 5:41:01 PM UTC-4 . INDEXDJX . Disclaimer 1D 5D 1M 6M YTD 1Y 5Y MAX PREVIOUS CLOSE 31,392.79 37,000 DAY RANGE 30,373.72 - 31,144.91 36,000 YEAR RANGE 30,373.72 - 36,952.65 35,000 34,000 About 33,000 The Dow Jones Industrial Average, Dow Jones, or 32,000 simply the Dow, is a price-weighted measurement stock market index of 30 prominent companies listed 31,000 on stock exchanges in the United States. Although the DJIA is one of the oldest and the most commonly 30,000 followed equity indices, many professionals consider Jul 2021 Sep 2021 Nov 2021 Jan 2022 Mar 2022 May 2022 the Dow to be an inadequate representation of the overall U.S. stock market compared to broader Q Compare to market indices such as the S&P 500 or Russell 2000 Index. The DJIA includes only 30 large companies Nasdaq Composite S&P 500 DAX PERFORMANCE-I.. S&P/TSX Composite In. and is a price-weighted index, unlike later stock 10,809.23 3,749.63 13,427.03 19,742.56 indices which use market capitalization. Furthermore, the DJIA does not use a weighted arithmetic mean. .IXIC V 23.74% .INX 11.88% DAX 14.33% OSPTX V 2.06% The value index can also be sum of the stock prices of the companies included in the index, divided by a factor which is currently approximately 0.152. The