How many ways can 5 paintings be lined up on a wall

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie

Aquadrilateral has exactly one pair of parallel sides. which name best describes the figure?

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.