Use Gauss-Jordan elimination to solve the linear system and determine whether the system has a unique solution, no solution, or infinitely many solutions. If the system has infinitely many solutions, describe the solution as an ordered triple involving variable z.4x - y + 3z=12x + 4y + 6z=-325x + 3y + 9z=20
A. (-8, -7, 9)
B. (2, -7, -1)
C. no solution
D. (8, -7, -2)
Answer: C
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Write a chain rule formula for the following derivative.
for z = f(r, s); r = g(t), s = h(t)
A. 
= 
+ 
B. 
= 
+ 
C. 
= 
D. 
= 
+ 
Solve the problem.The number of adult cats age 3 and older who are rescued from shelters in a certain region are shown in the table for various years.
Let f(t) be the number (in thousands) of adult cats that are rescued from shelters in the year that is t years from 2008. A reasonable model is 
Estimate the number of adult cats (to the nearest hundred) that were rescued in 2013.
A. 5000 cats B. 7400 cats C. 7200 cats D. 700 cats
Calculate the number of distinguishable strings that can be formed with the stated letters.5 m's and 5 n's
A. 25 B. 642 C. 252 D. 10
Add and subtract as indicated. Simplify and leave the numerator and denominator in your answer in factored form.
+ 
- 
A. 
B. 
C. - 
D. 