Solve the direct variation.Suppose x varies directly as y. If x = 4 when y = 24, what is the value of y when 
A. 81
B. 54
C. 36
D. 16
Answer: B
Mathematics
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Multiply.(-2x2 + 4y)(5x2 + 5y)
A. -10x4 + 10x2y2 + 20y2 B. -10x4 + 10x2y + 20y2 C. -10x4 + 10x2y + 20y4 D. -10x2 + 10xy + 20y2
Mathematics
Factor completely.m6 - 729
A. (m + 3)(m - 3)( m2 + 3m + 9)( m2 - 3m + 9) B. (m + 3)(m - 3)( m2 - 3m + 9)2 C. (m - 3)6 D. (m - 3)2( m2 + 3m + 9)2
Mathematics
Find the x- and y- intercepts. If there are no intercepts write "No x-intercept" or "No y-intercept".-4x - 2y = 4
A. (0, -3), (0, -8) B. (-3, 0), (-8, 0) C. (-1, 0), (0, -2) D. (-1, -8), (-3, 4)
Mathematics
Find the domain and range of the inverse of the given function.f(x) = 
, x ? 0
A. Domain: (0, 2]; range: [0, ?) B. Domain: (-?, 0}; range: [-2, 0) C. Domain and range: [0, ?) D. Domain: [0, ?); range: (0, 2]
Mathematics