Question

4. The first two numbers in a sequence are 3, 9.

Answer 1

Answer:

234567

Step-by-step explanation:

Answer 2

Answer:

AP equation:

• $t_n=t_1+(n-1)d$

Based on the first two terms, we have:

• $t_1=3,\\t_2=9\\d=9-3=6$

The equation is:

• $t_n=3+(n-1)*6=3+6n-6=6n-3$

Next two terms are:

• $t_3=6*3-3=15\\t_4=6*4-3=21$