(−9)² what is the answer

Solve the equation using the given values: x= -2.5; y= -7.51. 2xy + 2x²

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.

In a sale there is 25% of all prices a chair costs £45 in sale how much was it before the sale