22. What is the nth rule of the sequence 1, 4, 8, 16 and so on...? A. n2
B.2n
C. 2-n
D. n÷2
23.A letter that represents an unknown number is called?
a.constant
b.variable
c.term
d.means
24.What is x + 5=15 in words?
a.the sum of a number x and 5
b.the total of a number x, 5 and 15
c.the sum of a number and 5 is equal to 15
d.the difference of a number x and 5 equals 15
B.2n
C. 2-n
D. n÷2
23.A letter that represents an unknown number is called?
a.constant
b.variable
c.term
d.means
24.What is x + 5=15 in words?
a.the sum of a number x and 5
b.the total of a number x, 5 and 15
c.the sum of a number and 5 is equal to 15
d.the difference of a number x and 5 equals 15
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