Question

Given the functions f(n) = 25 and g(n) = 3(n − 1), combine them to create an arithmetic sequence, an, and solve for the 12th term. (2 points)

Answer 1

like a first step you need to know what is an aritmetic sequence - do you know ?

@Laylalyssa

Answer 2

so - in an arithmetic sequence the difference between one term and the next is a constant

@AZ opinon pls. ty

Answer 3

how you like - wan combine them ? adding ?

Answer 4

so in this way what will get ?

f(n) +g(n) = ?

Answer 5

= 25 + 3(n-1) =

distribute parentheses what will get ?

Answer 6

= 25 + 3n -3 = 22 +3n so we get

f(n) +g(n) = 22 +3n

how you get the first term ?

@Laylalyssa

Answer 7

\(\color{#0cbb34}{\text{Originally Posted by}}\) @jhonyy9
= 25 + 3n -3 = 22 +3n so we get

f(n) +g(n) = 22 +3n

how you get the first term ?

@Laylalyssa
\(\color{#0cbb34}{\text{End of Quote}}\)
I never learned this

Answer 8

a_n = 22 +3n

a_1 = ?

Answer 9

to get a_1 give to n the value of 1

Answer 10

a_1 = ?

Answer 11

@Zwee

Answer 12

a_n = 22 +3n

a_1 = 22 +3*1 = ?

Answer 13

@Laylalyssa

Answer 14

a_1 = 22 +3*1 = 22 +3 = 25

a_2 = 22 +3*2 = ?

Answer 15

@supie do you can continue it ?