Evaluate the polynomial.x2 + 2y2 - 3xy for x = 4 and y = 5
A. 126
B. 66
C. -54
D. 6
Answer: D
Mathematics
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A function f(x), a point x0, the limit of f(x) as x approaches x0, and a positive number ? is given. Find a number 
such that for all x, 0 < 
< ? ? 
< ?.f(x) = 9x + 3, L = 21, x0 = 2, and ? = 0.01
A. 0.005556 B. 0.001111 C. 0.002222 D. 0.005
Mathematics
At the given point, find the slope of the curve or the line that is tangent to the curve, as requested.y6 + x3 = y2 + 9x, slope at (0, 1)
A. 
B. 
C. - 
D. 
Mathematics
Provide an appropriate response.What multiplication fact is illustrated by the rectangular area model? 
A. 2 × 
= 
B. 2 × 
= 
C. 2 × 
= 5
D. 
× 
= 
Mathematics
Add or subtract as indicated.
+ 
A. 
B. 
C. - 
D. 
Mathematics