Evaluate the expression, given x = -2, y = 3, and a = -4.4(x + 4) + 7a2
A. 120
B. 136
C. -104
D. -20
Answer: A
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Solve the problem.Consider the figure below. (a) Write an expression for the length of the bottom. (b) Write an expression for the area of the largest rectangle.
A. (a) y + 9; (b) 3y(y + 9) or 3y2 + 27y B. (a) 3y + 9; (b) y(3y + 9) or 3y2 + 9y C. (a) 3y + y; (b) 9(3y + y) or 36y D. (a) 6y + 18; (b) 2y(6y + 18) or 12y2 + 36y
Provide an appropriate response.Explain the error in the following: 25x2 - 100 = (5x + 10)(5x - 10).
What will be an ideal response?
Write the complex number in the form a + bi.6(cos 330° + i sin 330°)
A. -3
- 3i
B. 3
- 3i
C. 3
+ 3i
D. -3
+ 3i
Solve the inequality. Express your answer using interval notation. Graph the solution set.|3k - 2| ? 3
A. [- 
, 
]
B. (-?, - 
] ? [
, ?)
C. (-?, 
]
D. (- 
, 
)