Find the root. Assume that variables represent nonnegative values.
A. 13x3y6
B. 12x6y12
C. 12x3y6
D. 11x3y6
Answer: C
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Solve the problem.In a study of traffic control, the number n of vehicles on a certain section of a highway from 
to 
was found to be 
where t is the number of hours after 
At what time is the number of vehicles the greatest?
A. 3 p.m. B. 4:30 p.m. C. 4 p.m. D. 5 p.m.
Construct the requested tree diagram.Construct a tree diagram that shows all possible 2-letter code words using only the letters x and y with repetition allowed.
A.
| | |
| x |
| | |
| y |
B.
| /\ |
| x | y |
| /\ | /\ |
| x | y | x | y |
C.
| /\ |
| x | y |
| | | | |
| y | x |
D.
| /\ |
| x | y |
| /| | | |
| x | y | x |
Solve. Clear decimals first.12.04y - 72.24 + 8.6y = 6.88y - 41.28 + 51.6
A. 18 B. -18 C. -6 D. 6
Identify the vertex, axis of symmetry, and whether the parabola opens upward or downward.
A. (-1, -2); x = 0; Upward B. (-2, -1); x = 0; Downward C. (-2, -1); x = -2; Downward D. (-2, -1); x = -2; Upward