10 Questions

Questions and Answers

- 1.If , find C(3) and C(-2).
- A.
-2 and -8

- B.
-2 and 8

- C.
2 and 8

- D.
2 and -8

- 2.Graph on your graphing calculator. What is the domain and range?
- A.
D: [-3, 1] R: (- infinity, 5]

- B.
D: (- infinity, infinity), R: (- infinity, -1]

- C.
D: (- infinity, infinity), R: (- infinity, 5)

- D.
D: (- infinity, infinity), R: (- infinity, 5]

- 3.Find the slope of the line through (-4, 6) ad (8, -16).
- A.
-11/6

- B.
-6/11

- C.
5/6

- D.
6/5

- 4.Find the slope of 2x - 3y = 7.
- A.
-2/3

- B.
-2

- C.
2/3

- D.
2

- 5.Write the equation of a line that has slope 4 and y-intercept 6.
- A.
Y = 6x + 4

- B.
Y = 4x + 6

- C.
4x + 6y = 10

- D.
Y = 4x - 6

- 6.Write the equation of the line that has slope and passes through (4, -6).
- A.
Y = -3/4 x - 3

- B.
Y = -3/4 x - 10

- C.
Y = -3/4 x + 9

- D.
Y = -3/4 x - 1/2

- 7.Write the equation of the line that passes through (-8, 3) and is perpendicular to the line 4x + 3y = 6.
- A.
Y = -4/3 x - 23/3

- B.
Y = -3/4 x - 3

- C.
Y = 3/4 x + 3

- D.
Y = 3/4 x + 9

- 8.Teacher Salaries The average salary of a classroom teacher in the United States is given by f(x) = 982.06x + 32903.77, where x is the number of years after 1990. What is the average salary in 2005 according to this equation?
- A.
$48,616.73

- B.
$2001934.07

- C.
$47,634.67

- D.
$37814.07

- 9.
- A.
Y = 10x + 2.99

- B.
Y = 2.99x + .10

- C.
Y = .10x + 2.99

- D.
Y = 2.99x + .10x

- 10.Go to pg 80 and do #29 b and c.
- A.
B. f(25000) = 448.11. $448.11 is the payment to borrow $25,000. C. A = 20,000

- B.
B. f(25000) = 448.11. $448.11 is the monthly payment to borrow $25,000. C. A = 20,000

- C.
B. f(25000) = 448.11. $448.11 is the monthly payment to borrow $25,000. C. A = 15,000

- D.
B. f(25000) = 537.73. $537.73 is the monthly payment to borrow $25,000. C. A = 20,000