A colony of amoebas is being studied. The mass of the colony triples every day. On Day x of the study. the colony has a mass of 3^x mg. a. what is the mass of the colony on Days 3, 2, and 1?
what is the mass of the colony on Day 0, when the study begins?

the answer is ! ?

so first lets findout how much she spent so whats 32.00 - x = 9.20

32.00 - 22.75 =9.25. so she spent a total of $22.75 okay now we know the amount she spent. so now u got it from here.

except if the answer is in the value of money, then, it will matter. it will have to be $0.40, but i can tell this is not a money question, so .4 should be the right one.

i may be incorrect but i believe that her first error was in step one when she multiplyed her equation by 1/4 when she should have divided it by 1/4