Answer:
1) D
2) C
Step-by-step explanation:
1. The blue algae has an initial mass of 20 kg and doubles its mass every hour. Then after t hours, the mass of blue algae is

2. The green algae has an initial mass of 160 kg and grows at a constant rate of 0.20 kg per minute. Then after t hours (60t minutes), the mass of green algae is

Part I) At t=3:

The mass of green algae has 196-160=36 kg more mass at 3 hours.
Part II) At t=4:

The blue algae has 320-208=112 kg more mass at 4 hours.
Answer:
8
Step-by-step explanation:
we conformed the 8s by 4 and 3
In 7 weeks Joy will have $230 and Cullen will have $230
Answer:
D) It is the amount they raise each week
Step-by-step explanation:
Given : Their fundraising progress is modeled by the function
f(x) = 435 + 1200x, where x is measured in weeks.
To Find :What is the meaning of the coefficient 1200?
Solution :
f(x) = 435 + 1200x
Where x denotes the week
if 1200 is raised fund so 1200x is the fund raised in x weeks
Thus the coefficient 1200 means the amount they raise each week.
Thus Option D is correct .
D) It is the amount they raise each week
Answer:
4s
s+s+s+s
Step-by-step explanation: