Solve the system of equations graphically, if a solution exists.3x + 2y = 14-2x + 3y = 8
A. No solution
B. x = 3, y = 14
C. x = 2, y = 4
D. x = 4, y = 2
Answer: C
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Choose the equation that matches the graph.
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
+ 
= 1
List all subsets or determine the number of subsets as requested.List all the subsets of {3}.
A. {3}, { }, {?} B. {0, 3}, {3} C. {3}, { } D. {3}
Find the values of x for which the given function is concave up, the values of x for which the function is concave down, and any points of inflection.y = -2x2 - 4x - 5
A. Concave up for all x, no points of inflection B. Concave down for all x, no points of inflection C. Concave down for x < -1, concave up for x > -1, point of inflection at (-1, -3) D. Concave up for x < -1, concave down for x > -1, point of inflection at (-1, -3)
Which of the following cues can help teachers transition a class from one activity to the next?
a. Counting down from five b. Flicking the lights on and off c. Setting a timer with an alarm d. All of the above