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• which statement best describes ecological succession? it is always caused by human intervention. it occurs after a disturbance. it never occurs in a predictable pattern. it is a series of rapid changes in an ecosystem.
  
• a line that passes through the points (–4, 10) and (–1, 5) can be represented by the equation y = y equals negative startfraction 5 over 3 endfraction left-parenthesis x minus 2 right parenthesis.(x – 2). which equations also represent this line? select three options. y = y equals negative startfraction 5 over 3 endfraction x minus 2.x – 2 y = y equals negative startfraction 5 over 3 endfraction x plus startfraction 10 over 3 endfraction.x + 3y = –5x + 10 3x + 15y = 30 5x + 3y = 10
  
• which is equivalent to 16 superscript three-fourths x? rootindex 4 startroot 16 endroot superscript 3 x rootindex 4 x startroot 16 endroot cubed rootindex 3 startroot 16 endroot superscript 4 x rootindex 3 x startroot 16 endroot superscript 4
  
• hal fritz purchased a $4,000 bond at 90. the annual interest is 5%. what was the cost of the bond? what was the annual interest? what is the yield (to nearest tenth of a percent)?
  
• how might a family begin to reverse family conflict and promote healthy relationships? check all that apply.
  
• the function p(x) = –2(x – 9)2 + 100 is used to determine the profit on t-shirts sold for x dollars. what would the profit from sales be if the price of the t-shirts were $15 apiece?
  
• which is the graph of a quadratic equation that has a negative discriminant? on a coordinate plane, a parabola opens down. it goes through (negative 4, negative 4), has a vertex at (negative 2, 0), and goes through (0, negative 4). on a coordinate plane, a parabola opens down. it goes through (negative 4, negative 4), has a vertex at (negative 2, 0), and goes through (0, negative 4). on a coordinate plane, a parabola opens up. it goes through (negative 4, 4), has a vertex at (negative 2, 0), and goes through (0, 4). on a coordinate plane, a parabola opens up. it goes through (negative 4, 8), has a vertex at (negative 2, 4), and goes through (0, 8).
  
• the graph demonstrates that the cost at private and publictechnical schools greatly varies.vocational schools greatly varies.four-year universities greatly varies.community colleges greatly varies.
  
• what is common between transverse waves and longitudinal waves? both include an amplitude, crest, and rarefactions both move faster at higher temperatures both move slower through densely packed molecules both include a wavelength from compression to compression
  
• select all the correct answers. this chart gives data on greenhouse gas emissions in the united states from 1990 to 2013. which questions would help clarify the evidence in the chart? graph of u.s. greenhouse gas emissions by gas, 1990-2013. horizontal line, 1990-2013. bottom to above, gases shaded are fluorinated, other greenhouse, methane, carbon dioxide in million metric tons of carbon dioxide equivalents ranging from 0-8,000. what percentage of total greenhouse gas emissions is caused by natural sources? should industries emitting carbon dioxide in huge amounts be fined or punished? why are carbon dioxide emissions so much higher than other greenhouse gases? why did the quantity of carbon dioxide emissions stay constant throughout the period? what is the chemical formula for methane?