Shelia's friends noticed that her behavior changed suddenly. she began to stay up late into the night, rarely sleeping. she impulsively decided to paint every room in her house and to buy all new furniture for her house. she also started drinking more and engaging in risky behavior, such as unprotected sex. her friends noticed that when she spoke, she spoke very rapidly and quickly jumped from subject to subject. what may shelia be experiencing?
a) schizophrenia
b) posttraumatic stress disorder
c) a depressive episode
d) a manic episode

Type the correct answer in each box. use numerals instead of words. amanda is placing an order for running shoes and leather boots for her footwear boutique. she needs a total of 48 pairs of shoes and twice as many pairs of running shoes as leather boots. set up the two equations that can be used to find the number of each type of shoe that amanda needs to order. let the equation that represents the total number of pairs of shoes be referred to as constraint 1. let constraint 2 refer to the equation that describes the ratio of the number of running shoes to leather boots.