Answer:
Fraction of fire trucks = 
Total number of toy cars = 
Step-by-step explanation:
Fraction of sports car = 
Fraction of remaining cars 
So,
Fraction of pick up cars = 
Therefore,
Fraction of fire trucks = 
That is Number of fire trucks = ( Total number of toy cars )
Number of fire trucks = 4
Total number of toy cars = 
Because 0.09 is ten times as big as 0.009
Adds 3 each time
first term is 5
an=a1+d(n-1)
d=common difference
a1=first term
an=5+3(n-1)
18th term
a18=5+3(18-1)
a18=5+3(17)
a18=5+51
a18=56
C is answer
No
645 becomes 650 when rounded to the nearest ten
645 becomes 600 when rounded to the nearest hundred
Not factorable
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