An earthquake wave travels through 55 km of rock in 25 seconds. a) Which equation represents the relationship between t, the number of seconds, and d, the total distance the wave travels?

b) If the earthquake wave has traveled for 80 seconds, how far, in km, has the wave traveled?

c) If the earthquake wave can be felt 792 km away from the center of the earthquake, how long ago, in seconds, did the earthquake happen?

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.