Use Gaussian elimination or Gauss-Jordan elimination to solve the problem.Ellen wishes to mix candy worth $1.85 per pound with candy worth $5.72 per pound to form 24 pounds of a mixture worth $4.75 per pound. How many pounds of the more expensive candy should she use?
A. 8 lb
B. 23 lb
C. 6 lb
D. 18 lb
Answer: D
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Describe the situation with a linear inequality and then solve the inequality.A certain car has a weight limit for all passengers and cargo of 1121 pounds. The four passengers in the car weigh an average of 180 pounds. Use an inequality to find the weight of the cargo that the car can handle.
A. at most 941 pounds B. at most 560 pounds C. at most 401 pounds D. at most 6 pounds
Find all specified roots.Square roots of -1 + 
i
A. 
+ 
i, - 
- 
i
B. 
- 
i, - 
+ 
i
C. 6 - 2i, -6 - 2i
D. 
+ 
i, - 
- 
i
Provide an appropriate response.
=
A. 
B. 
C. 
D. 
E. 
Graph the function, showing all asymptotes (those that do not correspond to an axis) as dashed lines. List the x- and y-intercepts.f(x) = 
A. x-intercept: 
, no y-intercept ;
B. x-intercept: (1, 0) , no y-intercept ;
C. x-intercept: 
, no y-intercept ;
D. x-intercept: (0, 0) , y-intercept: (0, 0) ;