Answers and test for week 9 tools test
Answers, Week 10 ToDo questions
Answers, Week 9 Practice, Part 1
Week 8 Part 1 Practice Set Answers
Week 7 Tools Practice Quiz Answers
Week 7 Problem Solving Practice Test answers
Week 7 Practice Part 1 Answers
Week 5 quiz answers (Tools and Problem Solving)
Week 5 Part 1 Practice Answers
Answers, Week 3 Practice test #2
Answers to Week 3, Part 1:
Exercises 1.3 #1
a. F(x) = (1000,3.7), (2000,6.4), (3000,9.1), (4000,11.8)
b. f(2500) = 7.75 At an elevation of 2500 ft. there were approx. 7.75 inches of snow
c. f(-2000) = -4.4. It has no good meaning, as you would have to go 2000 feet below sea level and expect to see a snowfall of negative inches, which you cannot have
1.3 #2b h(2) = 1413 2 years after 1997, or in 1999, approx. 1413 new hotels opened in the US
1.5 #1 a 27.1-22.8/2003-1950 = 4.3/53 = .0811 years of age/year
#5b 1910-1920, 1920-1930, 1940-1950
#6a Yes.. 1930-1940 and 1950-1960
Is 3 + 2x – y = .7x – 2y + 6 a linear function? YES. the equation can me put into y=mx+b format. Try copying and pasting this formula into the graph function at http://mathway.com/problem.aspx?p=graphing to see what it looks like
1.6 #4 a Your answers will vary.. examples: (0,5), 1,3), (2,1). (3,-1). (-1.7)
b The slope is m=-2
c. The verticle intercept is: (0,5)
8. m gets big… slope gets steep, m gets small, slope gets flat, m gets negative, slope slants downwards, b gets bigger, graph moves up b gets negative, graph moves down