Find the largest open interval where the function is changing as requested.Decreasing y = 
+ 7
A. (-7, 0)
B. (7, ?)
C. (0, ?)
D. (-7, 7)
Answer: C
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Describe the given set of points with a single equation or with a pair of equations.The circle in which the plane through the point (10, -9, -9) perpendicular to the x-axis meets the sphere of radius 26 centered at the origin.
A. x2 + y2 + z2 = 576 and y = 10 B. x2 + y 2 + z2 = 476 and y = 10 C. x2 + y2 + z2 = 676 and x = 10 D. x2 + y2 + z2 = 676 and z = 10
Express the number in standard notation.1.11 × 10-4
A. -111,000 B. 0.00111 C. 0.000111 D. 0.0000111
Use the distributive property to multiply. Then, if possible, simplify the resulting expression.4(a + b)
A. 4ab B. 8ab C. 4a + 4b D. 4a + b
Minimize the objective function C, subject to the given constraints. 
x ? 0, y ? 0
, 
A. C = 0 B. C = 45 C. C = 18 D. C = 27