Please answer ASAP PART A:
James is setting up a fish tank. he’s buying a breed of goldfish that typically grow to be 12 inches long it is recommended that there will be 1 gallon of water for each inch of fish length in the tank
What is the ratio of fish to water?
PART B:
What size tank (in gallons) is needed for James to have 5 full grown goldfish?
How many full grown fish can go in a 40 gallon tank?
PART C:
James had so much success with his goldfish that he had to sell 1/3 of them to help with overcrowding. If he has 8 fish left in the tank, how many did he once have?

square root of 36/6 = 2.449489743

square root of 16/6 = 1.632993162

square root of 6 = 2.449489743

the answer is square root of 16/6 because the square root of 36/6 is the same answer as square root of 6 = 2.449489743

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.

8: 40

2 hours

10: 40

55 min

11: 35