A substantial percentage of the United States population is foreign-born. The bar graph shows the percentage of foreign-born Americans for selected years from 1920 through 2008. The percentage, p, of the United States population that was foreign-born x years after 1920 can be modeled by the formula p = 0.004 x 2 − 0.37 x + 14.1. According to this model, in which year will 25% of the United States population be foreign-born? Round to the nearest year.
A substantial percentage of the United States population is foreign-born. The bar graph shows the percentage of foreign-born Americans for selected years from 1920 through 2008. The percentage, p, of the United States population that was foreign-born x years after 1920 can be modeled by the formula p = 0.004 x 2 − 0.37 x + 14.1. According to this model, in which year will 25% of the United States population be foreign-born? Round to the nearest year.
A substantial percentage of the United States population is foreign-born. The bar graph shows the percentage of foreign-born Americans for selected years from 1920 through 2008.
The percentage, p, of the United States population that was foreign-born x years after 1920 can be modeled by the formula
p
=
0.004
x
2
−
0.37
x
+
14.1.
According to this model, in which year will 25% of the United States population be foreign-born? Round to the nearest year.
In 2010, a new type of computer was introduced and approximately 20 million were sold. In 2011, the number sold increased by a factor of approximately 2.5. Assuming that the sales follow a linear trend through 2016, approximately how many of these computers will be sold in 2016?
How many computers in millions?
An endangered species has a population of 1,000,000 alive right now. This is only 0.3% of its peak population number. What is the peak population number of the species?
Use excel in this question:
The Motion Picture Distributors Association of Australia collects yearly data on gross box office takings of the films in Australia. Data is provided here for the years 1990-2004. (Unfortunately more recent data is not readily available.) Is the highest box office takings for a film related to the number of films screened in Australia that year?
Year
No. of films screened
Highest box office ($ million)
1990
252
26.1
1991
240
19.22
1992
229
18.73
1993
259
31.74
1994
252
24.65
1995
253
17.93
1996
281
29.29
1997
285
22.7
1998
273
47.33
1999
255
38.72
2000
250
30.72
2001
245
32.05
2002
258
33.81
2003
268
37.14
2004
318
50.35
1. Produce a scatterplot of the relevant data. Comment on the appropriateness of analysing this data using a linear regression model.
2. Use the statistics from a regression analysis of this data to evaluate the evidence for a useful predictive linear relationship between the two variables at the 5%…
Elementary and Intermediate Algebra: Concepts and Applications (7th Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, algebra and related others by exploring similar questions and additional content below.
Linear Equation | Solving Linear Equations | What is Linear Equation in one variable ?; Author: Najam Academy;https://www.youtube.com/watch?v=tHm3X_Ta_iE;License: Standard YouTube License, CC-BY