The pattern 7, 8, 10, , follows the rule multiply by 2, then subtract 6. What are the next two terms? Question 9 options:

14, 28

14, 22

20, 28

20, 22

14 22

Step-by-step explanation:

i think it is

hello from mrbilldoesmath!

answer:

a(n) - a(n-1) -3

discussion:

this ones a bit interesting. given a(n) = 5 - 3n consider this:

a(n-1) = 5 - 3(n-1)

          = (5 - 3n) + 3             => but a(n) = 5 - 3n, the first term

          = a(n)   + 3                 => subtract 3 from both sides

a(n-1) -3 = a(n)  

or

a(n) - a(n-1) -3

you,

mrb