Answer: a) Explicit formula :
b) Recursive formula :
and 
Step-by-step explanation:
Since we have given that
Number of grams of yeast in a culture dish initially = 9 grams
According to question, a certain culture of year increases by 50 % every three hours.
So, the explicit formula will be

And the recursive formula will be

Hence, a) Explicit formula : 
b) Recursive formula :
and 
The answer is f12 submit 8765
Answer:
See below
Step-by-step explanation:
First, lets see how many feet of the original Eiffel tower (O) are represented in 1 foot of Caesar's tower model (M). We know that 1.5 foot is equal to 984 feet of the original, so we can say:
1.5 M = 984 O, this is our equivalence.
Now divide both sides by 1.5
1.5 M / 1.5 = 984 O / 1.5
1 M = 656 O
So, 1 foot of Cesar's Model is 684 feet of the original tower. We also know that 1 foot is equal to 12 inches, so we can say that 12 inches of Cesar Model (12 m) are equivalent to 656 feet of the original tower. So:
12 m = 656 O
If we divide both sides by 12:
m = 656/12 O
m = 56.67
So, 1 inch in Cesar's model represent 56.67 feet of the original Eiffel Tower.
Lets verify our result by multiplying 56.67 by 12 to get 1 feet and then by 1.5 to get the measure of the model:
56.67*12*1.5 = 984 feet, which is the height of the Eiffel tower.
Scale: 1 inch = 56.67 feet
2 is correct, because:
1) we have a close interval
2)we must have node on x=-5
X = 1st job
y = 2nd job
x + y = 22......x = 22 - y
7x + 8.25y = 171.50
7(22 - y ) + 8.25y = 171.50
154 - 7y + 8.25y = 171.50
-7y + 8.25y = 171.50 - 154
1.25y = 17.50
y = 17.50 / 1.25
y = 14 <== 14 hrs at the 8.25 per hr job
x + y = 22
x + 14 = 22
x = 22 - 14
x = 8 <=== 8 hrs at the 7 per hr job