Emma puts down $10000 in a simple interest account at a bank. She will earn $1800 in 4 years. What is the annual interest rate for the account.

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

Which of the following parabolas opens down?

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.