The following line graph shows the number of hours needed to prepare for various tests. Use the graph to answer the question.
How many more hours were needed to prepare for Test 4 than for 
.
A. 1
B. 4
C. 2
D. 3
Answer: D
Mathematics
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Find the exact value of the expression.cot 
A. 1
B. 
C. 
D. 
Mathematics
Graph the solution of the system of linear inequalities.
A. 
B. 
C. 
D. 
Mathematics
Solve.|2x - 12|= 6
A. 
B. 
C. 
D. 
Mathematics
Find the indicated term of the geometric sequence.a1 = 3, r = -1; Find a4.
A. a4 = -27 B. a4 = -3 C. a4 = 0 D. a4 = 3
Mathematics