Total DVD and Blu-ray disc sales in 2009 were $8.72 billion. For the purposes of this problem, you will combine DVD and Blue-ray disk sales into one category of DVD sales. A study by In-Stat predicted that "physical disc sales will decline by $4.7 billion by 2014," and that "streaming, on the other hand, should grow from its current $2.2 billion to $6.3 billion over the same time period (2009–2014) a. What is the slope, including units, of the model for DVD sales? Write a statement interpreting the meaning of the slope in the context of the problem. b. Write an equation that represents the linear model for DVD sales. Let D = the sales of DVDs in billions of dollars, and t = the number of years after 2009. c. What is the slope, including units, of the model for streaming videos?

Section 3.2 (35) Six years ago, I invested some money in Dracubunny Toy Co. stock, acting on the advice of a “friend.” As things turned out, the value of the stock decreased by 5%  every  4 months, and I discovered yesterday (to my horror) that my investment was worth only $297.91. How much did I originally invest?

Cryptocurrencies have rapidly become an important alternative to traditional currencies for many types of transactions. Etherium, one of the most prominent cryptocurrencies, has rapidly appreciated in value. Daily Etherium trading information for the first 332 days of 2021.  It includes the following variables: Date Day – Day of the year, used to assess trend over time Volume (US $) – Daily trading volume Opening Price (US $) – Opening price for daily trading Price Change (US $) – Daily change in price from opening to close 1. Determine the sample correlation coefficient, r, between Volume and Price Change. Test the alternative hypothesis that Volume has a linear relationship to Price Change. Specifically, what are the test statistic and the p-value for that test statistic? For α = .05, what do you conclude about the relationship between the variables? (reminder: the T.DIST.2T function requires input of a positive test statistic)

Section 3.2 (31) During a prolonged recession, property values on Long Island depreciated by 2% every 6 months. If my house cost  200,000 originally, how much was it worth 5 years later?

Company ABC has the following information. Please calculate the Z-core for 2021 and 2022 and provide a comment on its performance. Variables 2022 2021 X1(net working capital /total asset) 0.56 0.175 X2(retained earnings/total asset) -0.12 0.08 X3(EBIT/total assets) 0.56 0.69 X4(market value of equity/book value of total liability) 1.2 0.96 X5(sales/total asset) 0.78 0.63 Z-score (1.2X1+1.4X2+3.3X3+0.6X4+1X5) 3.852 3.805

In May, about 451 thousand existing homes were sold in the U.S., and sales were decreasingby 3.4% per month.(a) Create a model for this situation. (Recall that you should define the independent anddependent variables and their units, as well as provide an equation.)(b) If this trend continues, how many existing homes will be sold in the U.S. in October?(Round to the nearest thousand homes.)

An environmental engineer wants to evaluate three different methods for disposing of nonhazardous chemical waste: land application, fluidized-bed incineration, and private disposal contract. Use the estimates below to help her determine which has the least cost at /= 15.00% per year on the basis of an annual worth evaluation. First Cost AOC per Year Salvage Value Life Land $-145000 $-86000 $23000 4 years Incineration $-760000 $-70000 $260000 6 years Contract O $-132000 O 2 years

Please please solve all parts of the question. Thank you so much.

Personal care aide is an occupation that is growing quickly. Assume​ that, in a certain​ region, there will be a need for 195,686 personal care aides in​ 2024, a growth of about 29​% over 2014 levels. How many personal care aides were there in this region in​ 2014?

The table below gives data on three movies. Gross earnings is the amount of money the movie brings in. Compare the net earnings (money made after expenses) for the three movies. Which provided the best return on investment? Release Date 10/29/2004 12/19/1997 $200,000,000 | Jurassic Park | 06/11/1993 | $63,000,000 Movie Saw Titanic Budget $1,200,000 Gross Earnings $103,096,345 $1,842,879,955 $923,863,984