Write the word phrase in symbols, using x as the variable.The product of a number and 8
A. 
B. 8x
C. 8 - x
D. 8 + x
Answer: B
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Use L'H
pital's rule to find the limit.
A. 0 B. 1 C. e D. 5e
Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = 
A. Domain: all points in the xy-plane; range: real numbers 0 ? z ? 10; level curves: circles with centers at (0, 0) and radii r, 0 < r ? 10
B. Domain: all points in the xy-plane; range: all real numbers; level curves: circles with centers at 
C. Domain: all points in the xy-plane satisfying x2 + y2 ? 100; range: real numbers 0 ? z ? 10; level curves: circles with centers at (0, 0) and radii r, 0 < r ? 10
D. Domain: all points in the xy-plane satisfying x2 + y2 = 100; range: real numbers 0 ? z ? 10; level curves: circles with centers at (0, 0) and radii r, 0 < r ? 10
Write the complex number in rectangular form.8(cos 30° + i sin 30°)
A. 4
+ 4i
B. 
+ 
i
C. 4 + 4
i
D. 
+ 
i
Use a calculator to give the value in degrees.sin-1(0.2079)
A. 12° B. 14° C. 15° D. 10°