What is the solution to -7x+y=11 and -6x-y=2

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

It says factor each expression 49x-28?

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.