Give an appropriate answer.Given the function f(x, y, z) and the positive number ? as in the formal definition of a limit, find a positive number ? as in the definition that insures 
< ?.f(x, y, z) = x + y - z ; ? = 0.03
What will be an ideal response?
Let ? = 0.01. Then if 
< ?, 
< ?, and 
< ?, 
= 
? 
+ 
+ 
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Solve the problem.Matt is going to invest no more than $4000 in two accounts earning 2% and 4% simple interest. He would like the accounts to earn at least $80 after one year. He wants to invest more than $1000 in the account earning 4% simple interest. Write a system of inequalities to describe this situation and solve by graphing.
A. 
B. 
C. 
D. 
Solve the system of equations graphically. If the system does not have a single ordered pair as a solution, state whether the system is inconsistent of dependent. 4x + y = 28x + 2y = 4
A. No solution, inconsistent
B. Infinitely many solutions, dependent
C. (0, 2)
D. (5, -2)
Provide an appropriate response.Add the rational expressions and reduce to simplest terms: 
+ 
A. 
B. 
C. 
D. 
Simplify.-171 ÷ (-9)
A. 19
B. 9
C. -19
D. 