Solve the problem.Find the moment of inertia about the y-axis of the thin semicircular region of constant density 
bounded by the x-axis and the curve 
.
A. 
?
B. 320?
C. 160?
D. 
?
Answer: C
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Solve the problem.Ms. Patterson proposes to give her daughter Claire an allowance of $0.20 on the first day of her 15-day vacation, $0.40 on the second day, $0.80 on the third day, and so on. Find the allowance Claire would receive on the last day of her vacation.
A. $6553.60 B. $3.00 C. $16,384.20 D. $3276.80
Simplify.5.2x - 1.2y - 3.1x + 9y + 2.2x
A. 4.3x + 7.8y B. 4.3x + 10.2y C. 4.3x - 1.2y + 9 D. 10.5x + 7.8y
Graph the quadratic function. Determine the vertex, find the equation of the axis of symmetry, find any x- and y-intercepts, and state the domain and range in interval notation.f(x) = -11x2 - 2x - 12
A. vertex: 
axis of symmetry: x = 
x-intercept: none; y-intercept: 12
domain: (-?, ?); range: 
B. vertex: 
axis of symmetry: x = - 
x-intercept: none; y-intercept: -12
domain: (-?, ?); range: 
C. vertex: 
axis of symmetry: x = - 
x-intercept: none; y-intercept: 12
domain: (-?, ?); range: 
D. vertex: 
axis of symmetry: x = 
x-intercept: none; y-intercept: -12
domain: (-?, ?); range: 
Use multiplication to check the answer. If an answer is incorrect, find the correct answer.
A. Incorrect; should be 3729 B. Correct C. Incorrect; should be 3730 R1 D. Incorrect; should be 3730 R2