Fill in the blank with one of the words listed below.
The set of all x-coordinates of a relation is called the 
of the relation.
A. x-axis
B. domain
C. range
D. x-intercept
Answer: B
Mathematics
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Solve. Write a mixed numeral for the answer.Brian was training to run a marathon. During the three-day period before the race he decided that he would train for a total of 12 hours. If he trained for 3
hours on the first day and 1
hours on the second day, how many hours would he need to train on the third day?
A. 6
hr
B. 6
hr
C. 7
hr
D. 6
hr
Mathematics
First, round the mixed numbers to the nearest whole number and estimate the answer. Then find the exact answer and write it in simplest form.3
? 6
A. 18
B. 21
C. 24
D. 20
Mathematics
Find the following.Find -x when x is 2.
A. 0 B. 2 C. -2 D. -3
Mathematics
Find the determinant.
A. 5 B. -5 C. 7 D. -7
Mathematics