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• a 2.5-kg rock is dropped off a 32-m cliff and hits a spring, compressing it 57 cm. what is the spring constant? round your answer to two significant figures. the spring constant, k, is startfraction n over m endfraction.
  
• which created the most resentment among european nations? countries mining their colonies for their own riches countries taking over each other’s colonies countries aiding the opposition forces in their colonies countries establishing colonies next to theirs
  
• in one or two paragraphs, describe how the american system changed the u.s. economy in the 1800s. then explain why some people disliked the american system.
  
• what is the common difference in the following arithmetic sequence? 7, 3, –1, –5, .... –3 –4 4 12
  
• which algebraic expressions are binomials? check all that apply. xystartroot 8 endroot x2y – 3x 6y2 – y y2 + startroot y endroot 4xy – two-fifths x2 +
  
• humans and apes have five fingers they can use to grasp objects. do you think these are analogous or homologous structures?
  
• which helps enable an oligopoly to form within a market? costs of starting a competing business are too high. the government restricts market entry. the number of options in a market confuses consumers. no competition exists between producers.
  
• what is the difference of the two polynomials? (7y2 + 6xy) – (–2xy + 3) 7y2 + 4xy – 3 7y2 + 8xy – 3 7y2 + 4xy + 3 7y2 + 8xy + 3
  
• environmental factors determine whether or not all genetic traits lead to health issues.
  
• a scale drawing is made to enlarge a picture by using a scale factor of 3. the enlarged picture is 9 inches by 15 inches. what are the dimensions of the original picture? 3 inches by 5 inches 3 inches by 15 inches 6 inches by 12 inches 27 inches by 45 inches