Solve the system by the method of your choice. Identify systems with no solution and systems with infinitely many solutions, using set notation to express their solution sets.y = 15 - 2x2x + y = 19
A. {(6, 9)}
B. {(3, 13)}
C. {(x, y) 
}
D. ?
Answer: D
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Solve the problem.The height h in feet of a projectile thrown upward from the roof of a building after time t seconds is shown in the graph below. Find and interpret h(0.6).
A. 425 ft; The projectile will be 425 feet above the roof of the building 0.6 seconds after it is thrown. B. 375 ft; The projectile will be 375 feet above the roof of the building 0.6 seconds after it is thrown. C. 400 ft; The projectile will be 400 feet above the ground 0.6 seconds after it is thrown. D. 450 ft; The projectile will be 450 feet above the ground 0.6 seconds after it is thrown.
Convert the radian measure to degree measure. Use the value of ? found on a calculator and round answers to two decimal places.- 
?
A. -9.94° B. -285° C. -570° D. -1140?°
Solve the equation by completing the square.x2 + x + 9 = 0
A. 
B. 
C. 
D. 
Find the equation of the axis of symmetry.f(x) = 3x2 + 6x + 6
A. x = 3 B. x = -2 C. x = -1 D. x = 1