Use the graph to determine the function's domain and range. Write the domain and range in interval notation.
A. domain: (-?, ?)
range: (-?, ?)
B. domain: [5, ?)
range: [-3, ?)
C. domain: (-?, ?)
range: [-3, ?)
D. domain: (-?, 5) or (5, ?)
range: (-?, -3) or (-3, ?)
Answer: C
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Find the indicated term by use of the following information. The r + 1 term of the expansion of (a + b)n is given by 
an - r brThe term involving b9 in (a + b)12
A. 495a3b9 B. 220a3b9 C. a3b9 D. 1980a3b9
Use the graph to find the intervals on which it is increasing, decreasing, or constant.
A. Decreasing on (-3, -1) and (1, 4); increasing on (-2, 1) B. Decreasing on (-3, -2) and (2, 4); increasing on (-1, 1) C. Increasing on (-3, -2) and (2, 4); decreasing on (-1, 1); constant on (-2, -1) and (1, 2) D. Decreasing on (-3, -2) and (2, 4); increasing on (-1, 1); constant on (-2, -1) and (1, 2)
Graph the quadratic equation. Identify the vertex and the intercept points with their coordinates.y = x2 - 9
A. vertex: (0, -9)
x-intercepts: (-3, 0) and (3, 0)
y-intercept: (0, -9)
B. vertex: (0, 9)
x-intercepts: none
y-intercept: (0, 9)
C. vertex: (0, -9)
x-intercepts: none
y-intercept: (0, -9)
D. vertex: (-9, 0)
x-intercept: (-9, 0)
y-intercept: (0, 81)
Solve the problem.The shape of a patio is triangular with a height of 11 ft and base of 18 ft. What is the cost of outdoor carpeting to cover the patio if the carpeting costs $2.50 per ft2?
A. $495.00 B. $123.75 C. $99.00 D. $247.50