Answer:
-13/12
Step-by-step explanation:
75/12-22*4/3*4
75/12-88/12
-13/12
1/20 were striped if you want that as a decimal it would be 0.05 :)
*5% in decimal form is 0.05.
After one week we have:
N=400*1.05 beetles
After two weeks we have:
N=(400*1.05)*1.05 beetles
After three weeks we have:
N=((400*1.05)*1.05)*1.05 beetles
We can write this as:
Week 1:

Week 2:

Week 3:

From this we can make conclusion that formula for number of beetles after w weeks is given by:
If the scale factor is greater than one the triangle will be enlarged. If the scale factor is between o and 1 the triangle will be smaller.