Evaluate the surface integral for the given vector field and the oriented surface s. in other words, find the flux of across s. -xi-yj+z^3k, s is the part of the cone z=x^2 +y^2 between the planes z=1 and z=3 with downward orientation

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.