Solve for the indicated variable.Solve x = 
for r.
A. r = 
B. r = x + y
C. r = 
D. r = 
Answer: C
Mathematics
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Graph the equation.y = - 
x + 4
A. 
B. 
C. 
D. 
Mathematics
Provide an appropriate response.Factor completely: x2 + 4x
A. (x + 2)2 B. (x + 2)(x - 2) C. x(x + 2)(x - 2) D. x(x + 4)
Mathematics
Solve the system of equations by the elimination method. Check your solutions. For any dependent equations, write your answer in ordered pair form.
A. ? B. {(0, 7)} C. {(0, 6)} D. {(-1, 7)}
Mathematics
Decide whether the graph represents a function.
A. Function B. Not a function
Mathematics