9.it is an expression that is made up of one or more terms joined by + or - signs.
a.numerical expression
b.algebraic expression
c.mathematical sentence
d.verbal expression
10.it is a part of an algebraic expression that has fixed value.
a.variable
b.term
c.phrase
d.constant
14.in an algebraic expression,what do you call the symbols that do not have fixed values?
a.constant
b.phrase
c.term
d.variable
15.what is m in the term 12m?
a. it is the exponent of 12.
b.it is the literal coefficient of 12.
c.it is the numerical coefficient of 12.
d.it is the literal coefficient of the term.
16.if two terms have the same literal coefficient,then they are called ____.
a.like terms
b.dissimilar terms
c.similar terms
d.both a and c
19. what is the value of the expression 2x + y - 6 when x =-2 and y=3?
a.7
b.1
c.-2
d.-7
20.evaluate 3(a+3b),if a=5 and b=-5
a.-15
b.15
c.25
d.45
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