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• read through the scenarios below and calculate the predicted change in kinetic energy of the object compared to a 50 kg ball traveling at 10 m/s. a 50 kg ball traveling at 20 m/s would have kinetic energy. a 50 kg ball traveling at 5 m/s would have kinetic energy. a 50 kg person falling at 10 m/s would have kinetic energy.
  
• lars is writing a research paper on the russian conquest of siberia in the 16th century. read lars’s research question. ""how was russia able to also conquer parts of poland in the 16th and 17th century?” is this research question effective? yes, because it can be easily answered. yes, because it states the topic of the paper. no, because it is indirectly linked to the topic. no, because it includes repetitive information.
  
• what is the solution to the equation 2 (4 minus 3 x) + 5 (2 x minus 3) = 20 minus 5 x? x = –13 x = startfraction 5 over 4 endfraction x = startfraction 13 over 2 endfraction x = 3
  
• consider the function y = cos(x). which change would increase the period by a factor of 3?
  
• read the excerpt. then choose the correct way to complete each sentence. wilson sees as the key to achieving peace. a quotation that supports this conclusion is .
  
• during one month of cell phone use, noah used 200 anytime minutes and 400 text messages, and paid $80.00. the next month, he used 150 anytime minutes and 350 text messages, and paid $67.50. which statement is true? each text message costs 5 cents more than each anytime minute. each anytime minute costs 10 cents more than each text message. a text message and an anytime minute each cost 25 cents. each text message costs double the amount of an anytime minute.
  
• find the product. (a2)(2a3)(a2 – 8a + 9) 2a7 – 16a6 + 18a5 2a7 – 16a6 – 18a5 2a8 – 16a7 + 18a6 2a12 – 16a7 + 18a6
  
• study the bar graph about aircraft production in 1943. which of these statements are correct? check all of the boxes that apply.
  
• if you were a forensic anthropologist and were studying human remains, what information would you look for in the bones? why would this information be helpful?
  
• peter made custard every weekend. the more times he made custard, the more practice he gained. the time he took to make the same amount of custard every week decreased with practice. the function below shows the number of hours f(x) peter took to make custard after he had made it x times: f(x) = 2(0.6)x which graph best represents the function?