MA240 Online Exam 1_02 SCORE 95 PERCENT

Question 1 of 205.0 Points
The graph of an equation in two variables is:
A. one method for graphing such equations.
B. a solution of an equation in two variables.
C. the set of all points whose coordinates satisfy the equation.
D. are ordered pairs of real numbers which denote distance and direction along the x axis.

Question 2 of 205.0 Points
Solve the following linear inequality:

x/6 + 1/8 ≤ x/2 - 3/4
A. [21/8, ∞)
B. [12/3, -∞)
C. [4,-∞)
D. (-∞, ∞)

Question 3 of 205.0 Points
Solve. Write the solution in interval notation.

|x + 4| ≤ 6
A. (–∞, –10) ∪ (2, ∞)
B. (–∞, –10] ∪ [2, ∞)
C. (–10, 2)
D. [–10, 2]

Question 4 of 205.0 Points
Solve the system of linear inequalities by graphing.

x – 2y ≥ 4
x ≤ 4
A.
B.
C.
D.

Question 5 of 205.0 Points
Solve the following quadratic equation:

(x + 3)2 + 25 = 0
A. {-4 - 6i, -1 + 4i}
B. {-4 - 6i, -2 + 5i}
C. {-3 - 5i, -3 + 5i}
D. {-6 - 5i, -2 + 4i}

Question 6 of 205.0 Points
Solve the system of linear inequalities by graphing.

3x + 4y ≤ 12
x + 3y ≤ 6
x ≥ 0
y ≥ 0
A.
B. INCORRECT
C.
D.

Question 7 of 205.0 Points
Solve the following polynomial equation:

x3 - 4x2 - x + 4 = 0
A. {2, 3, 4}
B. {-1, 2, 5}
C. {1, 1, 3}
D. {-1, 1, 4}

Question 8 of 205.0 Points
Solve the following quadratic equation:

2x2 + 5x - 3 = 0
A. {-1/2,2}
B. {1/2,3}
C. {2,4}
D. {-1/3,5}

Question 9 of 205.0 Points
Solve the following linear equation:

-10 - 3(2x + 1) - 8x - 1 = 0
A. x = -2
B. x = 4
C. x = -1
D. x = -2

Question 10 of 205.0 Points
Solve the following equation quadratic in form:
x2/3 - 9x1/3 + 8 = 0
A. {1, 219}
B. {1, 328}
C. {1, 129}
D. {1, 512}

Question 11 of 205.0 Points
Solve the following linear equation:

2x – 3 x -4 x+1
=
4 2 4
A. 2
B. 3
C. -6
D. -8

Question 12 of 205.0 Points
Solve the following equation involving absolute value:

-3│4x - 7│+ 15 = 0
A. {2/3, 3}
B. {1/4, 6}
C. {1/2, 3}
D. {1/5, 3}

Question 13 of 205.0 Points
Solve the following linear equation:

7(x - 2) = 4(x + 1) - 21
A. x = 0
B. x = -1
C. x = -3
D. x = 3

Question 14 of 205.0 Points
Solve the following radical equation:

√(x-3) + 5 = x
A. {2}
B. {5}
C. {9}
D. {7}

Question 15 of 205.0 Points
Which statement is FALSE?
A. d ∉ {a, b, c}
B. Ø ∈ {a, b, c}
C. Ø ⊂ {a, b, c}
D. a ∈ {a, b, c}

Question 16 of 205.0 Points
Solve the system of linear inequalities by graphing.

x + 2y ≤ 3
2x – 3y ≤ 6
A.
B.
C.
D.
Question 17 of 205.0 Points
Solve:

5 11 7
+ =
Y+4 Y2+Y-12 Y-3
A. 16
B. -16
C. 2
D. -2

Question 18 of 205.0 Points
The x coordinate of a y coordinate point where a graph crosses the y axis is:
A. This answer cannot be determined.
B. -1.
C. X2.
D. 0.

Question 19 of 205.0 Points
Solve:

9x + 8 = 2x + 8
A. –1
B. 0
C. 1
D. 2

Question 20 of 205.0 Points
Solve the following formula for the specified variable:

V = 1/3 lwh for h
A. h = 3V/lw
B. h = 5V/lw
C. h = 2V/ w
D. h = 7V/lw

ANSWER WILL BE SENT ON EMAIL.