Use a vertical format to add the polynomials. 8x
3 + 8x
2
A. 13x6 + 5x4
B. 13x3 + 5x2
C. 18x5
D. 18x10
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) = 9x2 - 5y2
A. Domain: all points in the xy-plane; range: real numbers z ? 0; level curves: ellipses 
B. Domain: all points in the xy-plane; range: all real numbers; level curves: hyperbolas 
C. Domain: all points in the first quadrant of the xy-plane; range: all real numbers; level curves: hyperbolas 
D. Domain: all points in the xy-plane; range: all real numbers; level curves: ellipses 
Solve the problem.How many of the numerals 81, . . . , 89 have horizontal reflection symmetry? Consider the numeral 1 as a vertical segment ?.
A. 2 B. 3 C. 4 D. 5
Provide an appropriate response.Fill in the blank to complete the statement. In order for a matrix to have a determinant, it must be 
matrix.
A. an augmented B. a square C. a rectangular D. a minor
Determine whether or not the graph represents a function.
A. function B. not a function