Find the slope of a line parallel to 3x plus y equals 15

What is the sum of these mixed numbers 2 1/8 + 4 3/8

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.

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.