College Algebra/Grammar quiz

This is a self quiz for the text Algebra/Grammar  {Which of the following could be a variable? -1 -2 -3 +a
 * type=""}
 * 1 is a constant, because it represents a specific number
 * 2 is a constant, because it represents a specific number
 * 3 is a constant, because it represents a specific number
 * a can be a variable, because it does not represents a specific number

{If y=2x+4z-5k, which of the following does Y not depend on? -x +y -z -k
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 * y is dependent on x
 * y is not dependent on itself
 * y is dependent on z
 * y is dependent on k

{Which variable is not the independent variable in the following equation: x=2y+3z-5k +x -y -z -k
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 * x is a dependent variable
 * y is a independent variable
 * z is a independent variable
 * k is a independent variable

{Which monomial is like 3x? -3y -2z -z +x
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 * If two monomials are "like", they can be added/subtracted
 * If two monomials are "like", they can be added/subtracted
 * If two monomials are "like", they can be added/subtracted
 * x and 3x can be added and subtracted from each other

{Using the distributive property, which is equal to 5(3+2+10) -5(3)+2+10 -5(3)+3(2)+2(10) +5(3)+5(2)+5(10) -15
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 * 2 and 10 must be multiplied by something
 * 2 and 10 must be multiplied by 5
 * 15 must be multiplied by 5

{Which set is a subset of the set {1, 3, 5, 7&#125; -{1, 2, 3} -{1, 3, 5, 7, 9} -{1, 2, 3, 4 ...} +{3, 7}
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 * 2 is not a member of the original set
 * 9 is not a member of the original set
 * 4 is not a member of the original set

{Which is a member of the set of natural numbers? +6/3 -2/3 -1/2 -2.1 Return to College Algebra
 * type=""}
 * 6/3=2