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Hi! What do you need help with?

What you need help with?

Alright, this sounds pretty easy! Okay, so, it doubles every hour.

it will double three times since \(12\div 4=3\)

if we start at 90, after 4 hours it will be how much?

180

Yep! so, then we add 4 more hours to that to make it 8 hours. How much is it now?

360

Yep! now, lets add a final 4 hours to make it 12. How much is it now?

720

Yep! So, at 12 hours there will be 720 pounds of algae :) Great job anna!

Okay, well first we need to simplify this, and multiply them. After you do this, what do you get?

(Dont forget the order of operations, multiplication comes before subtraction)

So, for A, you would do (6.2 x 10) - 5

i cant figure out how to find 5.2x10^3

5200

they are actually all exponents

And yes, 5200 is correct :) Good job!

Okay, that helps, thank you. Well, now we know that C = 5200. Have you done A and B as well?

idk how to do it with negatives

i cant figure it out