For the given equation, determine the values of a, b, and c, the direction in which the parabola opens, and the y-intercept.f(x) = 7x2 + 3x + 9
A. 
B. 
C. 
D. 
Answer: C
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Subtract.(0.7x4 - 0.8x3 + 0.9) - (4.6x4 + 2.1x - 1.3)
A. -3.9x4 - 0.8x3 - 2.1x + 2.2 B. -3.9x4 - 0.9x3 - 0.4 C. -3.9x4 - 0.8x3 - 2.1x - 0.4 D. -3.9x4 - 0.8x3 + 2.1x + 2.2
Solve the system for x and y. Show your answer as an ordered pair, (x, y).x - 3y = -33x - 2y = -9
A. (3, -1) B. No solution C. (-2, -3) D. (-3, 0)
Find the circumference and area of a circle having the given diameter or radius. Use 3.14 for ?. Round your results to the nearest tenth.r = 5.5 cm
A. 34.5 cm; 34.5 cm2 B. 34.5 cm; 95 cm2 C. 17.3 cm; 69.1 cm2 D. 17.3 cm; 379.9 cm2
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.
A. {(5, -3)}
B. {(0, 7)}
C. {(x, y) 
}
D. ?