Answer:
320 g flour
8 g salt
12 g yeast
20 ml oil
Step-by-step explanation:
To get from 600 to 400, divide by 1.5
To find the amounts of the other ingredients she will use, divide by 1.5
480/1.5 = 320 g flour
12/1.5 = 8 g salt
18/1.5 = 12 g yeast
30/1.5 = 20 ml oil
49-16=33 this is the answer
Given that the population quadruples every 39 minutes, you can determine that this bacteria population has Exponential Growth.
By definition, an Exponential Equation as this form:

Where "a" is the initial amount, "b" is the base, and "t" is the time period.
In this case, you know that:

Therefore, since you need to express the time "t" in minutes:

Now you can write the following equation to model the situation: