The number of students attending Martin Middle School decreased by 80 over a 10-year period. What integer represents the average yearly change in enrollment?

How to choose the sign of the radical in the denominator of the formula for the distance from a point to a line.

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.

Can someone me out here number 4 plz