HELP! 1 algebra question, will give medal!

Question

anonymous · Answer

attachment

anonymous · Answer

i was gonna help but I have no idea. Sorry, good luck.

anonymous · Answer

Thanks anyways!

anonymous · Answer

I'm on this right now…thats so weird! haha hold on! i think i know it!

anonymous · Answer

I'm pretty sure its C

anonymous · Answer

@emma97 if you could, please explain it because i don't understand.

anonymous · Answer

@campbell_st do you know how to work this out?

anonymous · Answer

ok thanks!

campbell_st · Answer

seems to make sense to me, just in that a larger advertising spend should result in more sales... providing price is unchanged.

anonymous · Answer

I don't understand how to complete it though.

campbell_st · Answer

well to me you use 

$$N = mA$$

use the information to find a

$$1800 =m \times 34000$$

so m = 0.05294

then 

when A = 42000.00

$$N = 0.05294 \times 42000$$

which gives an answer of 

N = 2223.529...

so N = 2224

hope it makes sense...

anonymous · Answer

Oh ok, i get it now! Thanks :)