Which expression is equal to the expression below? (7•2)^7

A. 7^7 + 2^7
B. 7^7 • 2^7
C. 7 • (7•2)
D. 9^7

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 california was approximately two times the population of florida. b. the population of florida was approximately twenty times the population of california. c. the population of florida was approximately two times the population of california. d. the population of california was approximately twenty times the population of florida.

How can you find the magnitude of a vector, v = < x, y > , where the horizontal change is x and the vertical change is y?

Can someone me immediately, this is due by midnight! if you can't see the question, i'll text it to you. show the steps you took to get your answer.