For an arithmetic sequence, the common difference is 4 and the 38th term is 141. what is the value of the 5th term?

an = a1 +d(n-1)

141 = a1 + 4 (38-1)

141 = a1 +4*37

141=a1+148

a1 = -7

an =a1+d(n-1)

a5 = -7 +4(4)

a5 = -7 +16

a5 =9

the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents