Question

1. The function a(n) = 10 - 3n

represents the value of the nth
term in a sequence. What is the
sum of the 1st and 4th terms of
the sequence?

Answer 1

1st term= 7 4th term= -2

Explanation:

basically you subtiture the number into n.

so for the first term you substitute n with 1.

which means its 10-(3x1)

=10-3

=7

so the first term is 7 and you do the same with the 4th by substituting in the number 4