Answer:
B. 11
Step-by-step explanation:
The formula for an arithmetic sequence is
an = a1+d(n-1)
a1 =1.2 (it is the first term)
We can find the common difference by taking the second term and subtracting the first term
1.4-1.2 =.2
d=.2
n = the term number we are looking for
an = 1.2 + .2(n-1)
We are looking for the 50th term so n=50
a50 = 1.2 +.2(50-1)
= 1.2 +.2(49)
= 1.2+9.8
=11
