Please answer ( Will give brainlst)!!

Or just try ur best I really don’t wanna fail:(

8000 + 8800 + 8000 + 8 million + 80 trillion + another a katrillion equals

According to the 2008 u.s. census, california had a population of approximately 4 × 10^7 people and florida had a population of approximately 2 × 10^7 people. which of the following is true? a. the population of florida was approximately two times the population of california. b. the population of florida was approximately twenty times the population of california. c. the population of california was approximately twenty times the population of florida. d. the population of california was approximately two times the population of florida.

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?