Answer:
1,2,4,8,16
Step-by-step explanation:

Her unit rate is 5 miles per hour.
Answer:
A perfect square is a number whose product value is an integer. If you change any integer you will always get a even number.
Step-by-step explanation:
1. acute
2. obtuse
3. right
4. (draw right angle)
5. (draw acute angle)
6. (draw obtuse angle)
7. (draw obtuse angle)
8. (draw obtuse angle)
9. (draw acute angle)