Find AC (Round to the nearest tenth) PLS HURRY

Measures of the angle of r, 31 s (x+4) t (3x+9)

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.

How to write four times a number,minus 6,is equal to theee times the number+8 as an equqtion