Solve the problem.Find the equation for the tangent plane to the surface 
at the point 
A. x + y + z = 0
B. x + y = 0
C. z = 0
D. x - y = 0
Answer: C
Mathematics
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Evaluate the expression x + y for the given values of the variables.x = 17, y = 15
A. 2 B. -2 C. -32 D. 32
Mathematics
Multiply. Simplify your answer.8 × 6
A. 14
B. 48
C. 48
D. 48
Mathematics
Use the distributive property to rewrite the expression.6(11 + 4)
A. 6 ? 11 ? 4 B. 6 ? 11 + 4 C. 6 + 11 + 4 D. 6 ? 11 + 6 ? 4
Mathematics
Convert to a rectangular equation.r = cos ?
A. (x + y)2 = y B. (x + y)2 = x C. x2 + y2 = y D. x2 + y2 = x
Mathematics