Find the maximum.The graph below shows 
for x ? 0. Find the coordinates of the maximum point. 
A. 
B. 
C. 
D. 
Answer: B
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Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = -2x + 2y
A. Domain: all points in the xy-plane; range: real numbers z ? 0; level curves: lines 
c ? 0
B. Domain: all points in the xy-plane; range: real numbers z ? 0 ; level curves: lines 
c ? 0
C. Domain: all points in the xy-plane; range: all real numbers; level curves: lines 
D. Domain: all points in the xy-plane; range: all real numbers; level curves: lines 
c > 0
Give a verbal statement equivalent to the given inequality involving the number x.x < 6 or x ? 16
A. x is less than or equal to 6, or x is greater than or equal to 16. B. x is less than 6 and x is greater than or equal to 16. C. x is greater than 6 and less than or equal to 16. D. x is less than 6, or x is greater than or equal to 16.
Use properties of exponents to simplify the expression. First, express the answer in exponential form. Then, evaluate the expression.(13)4
A. 17; 1 B. 112; 12 C. 112; 1 D. 112; 0
Express the number in scientific notation.2500
A. 2.5 × 10-2 B. 2.5 × 10-3 C. 2.5 × 103 D. 2.5 × 102