Brainteaser math 1. multiple me by 20 and the awnser is 10 what am 2.i am a prime number over 70 and less then 80 what am i . i am the largest 3 digit number that can be rounded up too 1000 what am i

Asunflower was 20 1/2 inches tall. over the next 6 months, it grew to a height of 37 inches tall. what was the average yearly growth rate of the height of the plzzz write a proportion i will give you 100 points