1) Start with 4 and add 2 repeatedly
2) Start with 2 and multiply by 2 repeatedly
3) 15, 18, 21
Answer:
C. 
Step-by-step explanation:
When two polygons are considered similar, the ratio of their corresponding sides would also be equal.
Since ∆ABC and ∆ADE are similar, 

Cross multiply


Divide both sides by 7 to find AB



Answer:
It would be 2 whole pizza left for the adults. the improper fraction would be 2 1/2 or 5/2
Step-by-step explanation:
The circumference is the correct.
It can be found using the formula,