Solve the system by graphing. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. no solution; ?
B. {(7, -3)}
C. {(-3, 7)}
D. infinitely many solutions; {
x = 7} or {
y = -3}
Answer: B
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Solve the problem.P = 0.75x - 95 models the relationship between the number of pretzels x that a certain vendor sells and the profit the vendor makes. Use the model to find and interpret the result when x = 1000.
A. When x = 1000, P = 1000; $1000 is the profit the vendor makes from selling 1000 pretzels. B. When x = 1000, P = 905; $905 is the profit the vendor makes from selling 1000 pretzels. C. When x = 750, P = 1000; $1000 is the profit the vendor makes from selling 750 pretzels. D. When x = 1000, P = 655; $655 is the profit the vendor makes from selling 1000 pretzels.
Provide an appropriate response.Decide if the system has one solution, no solution, or an infinite number of solutions.4x - 16y = 12 y = 
x - 
A. None B. One C. Infinite number
Graph the linear equation.x = -6
A. 
B. 
C. 
D. 
Simplify.(-i)34
A. i B. -i C. 1 D. -1