Reiki has 3/4 of a gallon of milk. she drinks one-third of the milk. how much milk does she drink?

Need on this one asap im almost done with this subject

If you double the input of a function and it results in half the output, and if you triple the input and it results in a third of the output, what can be guessed about the function? check all that apply.

How many times larger is 6 × 10^12 than 2 × 10^7? a. 30,000 b. 3,000 c. 3,000,000 d. 300,000