Solve.A spreadsheet is a rectangular array containing 29 rows and 22 entries in each row. How many entries does the spreadsheet contain?
A. 6380 entries
B. 638 entries
C. 609 entries
D. 18,502 entries
Answer: B
Mathematics
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Sketch the surface z = f(x,y).f(x, y) = 4x2 + 4y2 + 2
A. 
B. 
C. 
D. 
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Decide whether the statement is true or false.If the radius of a sphere is tripled, the surface area is multiplied by a factor of 9.
A. True B. False
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Solve the problem.Find an equation for the tangent to the curve y = 
at the point (1, 6).
A. y = -2x + 8 B. y = 4x + 2 C. y = -4 D. y = -4x + 10
Mathematics
Find the absolute value of the complex number.z = 2 + i
A. 3
B. 
C. 5
D. 
Mathematics