Tell whether the expression is a monomial. If it is, name the variable(s) and coefficient, and give the degree of the monomial.-4xy2
A. Monomial; variables x, y; coefficient -4; degree 3
B. Monomial; variables x, y; coefficient -4; degree 1
C. Monomial; variables x, y; coefficient -4; degree 2
D. Not a monomial
Answer: A
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Simplify the expression using multiplication.The area of the vertical faces of a rectangular solid with height h and base edges l and b can be expressed as 
Write this formula without parentheses and without multiplication signs.
A. A = 2h + lb B. A = 2hl + b C. A = 2hlb D. A = 2hl + 2hb
Determine the number that should be added to complete the square of the expression. Then factor the expression.y2 - 16y
A. -8; (y - 8)2 B. 64; (y + 8)2 C. 8; (y - 8)2 D. 64; (y - 8)2
Solve the problem.A comet follows the hyperbolic path described by 
- 
= 1, where x and y are in millions. If the sun is the focus of the path, how close to the sun is the vertex of the path? 
A. 28 million B. 3.2 million C. 2.1 million D. 5.3 million
Write the fraction or mixed number as a decimal. Round to the nearest thousandth if necessary.1
A. 0.25 B. 5 C. 1.5 D. 1.25