Help help please!!!!
Write a rule for the sequence.
8, –1, –10, –19

a. Start with 8 and add –9 repeatedly.
b.Start with –9 and add 8 repeatedly.
c.Start with 8 and add 9 repeatedly.
d.Start with 8 and subtract –9 repeatedly.

Question

Help help please!!!! 
Write a rule for the sequence.
8, –1, –10, –19

a. Start with 8 and add –9 repeatedly.
b.Start with –9 and add 8 repeatedly.
c.Start with 8 and add 9 repeatedly.
d.Start with 8 and subtract –9 repeatedly.

mathstudent55 · Answer

Try each choice until you find one that works.

anonymous · Answer

@mathstudent55 i did but im not sure

mathstudent55 · Answer

Let's look at choice a.
Start with 8.
Add -9 to 8, what do you get?

anonymous · Answer

@mathstudent55 -1

mathstudent55 · Answer

Right.
Now add -9 to -1.
What do you get?

anonymous · Answer

@mathstudent55 -10?

mathstudent55 · Answer

Correct. Notice that the -1 you got before and the -10 you got now are in the sequence you were given.
Now add -9 to -10.
What do you get?

anonymous · Answer

@mathstudent55 -19

mathstudent55 · Answer

Correct.
I have to go, so I'll just finish up quickly.
By adding -9 to -10 you get -19. That is the next number in the sequence.

That means by following the instructions of chouice a, we got the numbers of the sequence. That means the answer is a.

mathstudent55 · Answer

^choice

anonymous · Answer

thanks

mathstudent55 · Answer

you're welcome