Which of these strategies would eliminate a variable in the system of equations? 5x + 3y = 9
4x – 3y = 9
Choose all answers that apply:
A. Subtract the top equation from the bottom equation.
B. Subtract the bottom equation from the top equation.
C. Add the equations.

Delbert keeps track of total of the total number of points he earns on homework assignments, each of which is worth 60 points. at the end of the semester he has 810 points. write an equation for delbert’s average homework score a in terms of the number of assignments n.

Alex's monthly take home pay is $2,500. what is the maximum bad debt payment he can maintain without being in credit overload?

One file clerk can file 10 folders per minute. a second file clerk can file 11 folders per minute. how many minutes would the two clerks together take to file 672 folders?