The leading coefficient is positive and the highest power is 3 so the right side will go up and the left side will go down.
Answer:
47x - 9
Step-by-step explanation:
-4(4x + 4) + 7(1 + 9x)
-16x -16 + 7 + 63x
47x -9
You can find what x = because there is no = sign. This is in simplest form.
Answer:
Step-by-step explanation:
it becomes
Done
Answer:
There will be 200 000 bacteria after 8 hours
Step-by-step explanation:
The crop quadruples every hour.
x represents the number of hours that pass after preparing the crop
y represents the number of bacteria after x hours.
The equation for y in function of x 3 hours after observing the crop is:
We want to know after how long there will be 200 000 bacteria.
Then we make y = 200 000 and clear x.