Simplify the expression to a + bi form:
(-7+ 2i)^2

What is the value of r of the geometric series?

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.

You earn a 12% commission for every car you sell. how much is your commission if you sell a $23,000 car?