Question

Justine earned $18,000 during the first year of her job at city hall. After each year she received a 3% raise. Find her total earnings during the first five years on the job.

Answer 1

(18000)[5+4(3/100)+3(3/100)^2+2(3/100)^3+(3/100)^4)] i think

Answer 2

I'm sorry i think i must have mistaken

Answer 3

oops I messed up that equation

Answer 4

sooo Final=18,000(0.3)^5 isss Final= 43.74? @JoyLin

Answer 5

It's alright :) @Linyu

Answer 6

Oh wait. Yea. Nvm. I think mine was right.

Answer 7

Oh, okay @JoyLin sweet ^^ Thank you~

Answer 8

but 43.74 is way less than 18000

Answer 9

@Linyu I just realized that. I think it would be 1.03 instead of .03? Orr?

Answer 10

wait, that still doesn't make sense. dang it. haha

Answer 11

You could always do it long hand to double check.
1.) 18000*.03=x x+1800=a
2.) a*.03=b b+a=c
3.) c*.03=d d+c=e
4.) e*.03=f f+e=f
5.) f*.03=g g+f=h
a+c+e+f+h=amount earned

Answer 12

That's how you do it long hand.

Answer 13

I'm sorry, I don't understand what the final answer would be.

Answer 14

What's 18000*.03?

Answer 15

540

Answer 16

now what's 540+18000?

Answer 17

18540

Answer 18

Now look back at the list I posted. Check out #1. 18540=a Do you get what I was doing?

Answer 19

The variables don't represent some crazy equation. Those are left for you to fill out because I want to make sure you understand how to do it.

Answer 20

OHHH. So 18540*0.03= 556.2 b= 19,096.2 and on and on

Answer 21

Yuuuup! ^.^ That's all. Sorry if I confused you!

Answer 22

I know. Letters make math look scary. xD

Answer 23

No, it's all good! Thank you so much for the help :D haha, it does :P

Answer 24

Hopefully I've helped! :) If you have any other questions that confuse you, feel free to message me or tag me. Until then, good luck and good job! Keep up the great work!

Answer 25

it's 18000(1+3/100)^5 to be exact

Answer 26

^there's the formula way

Answer 27

Both work.

Answer 28

trying to challenge my eyes not to close during midnight so sorry T^T

Answer 29

Sooo, $98,431.37 is the final answer? I feel like thats wrong haha. It's okay! Thanks for the help :)

Answer 30

woah! too big!

Answer 31

I got $20,866.93 for the equation you gave me, but you have to add up all 5 years right?

Answer 32

it's like @JoyLin said but a slightly mistake. 18000*1.03^5 yes that's correct

Answer 33

Sorry. Dx Haven't done exponential growth/decay in a long time!

Answer 34

@JoyLin my brain rusted on this one also

Answer 35

So $20,866.93 is correct?

Answer 36

yes

Answer 37

YAY. THANK YOU.

Answer 38

Sorry that took so long! Dx

Answer 39

@JoyLin It's not a problem! I learned something :D

Answer 40

That's good! :) Well that's what real learning is. Asking questions and making mistakes. xD