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• which expressions are equivalent to 2 superscript 5 times 2 superscript 4? check all that apply.
  
• figure abcd is a parallelogram. points x and y are placed so that bx ≅ dy and cd ⊥ xy. the area of bxyc is 71.5 square units. what is the area of abcd? 99 square units 110 square units 126 square units 143 square units
  
• “in every community there are men of goodwill, who, if they had the money, could organize [efforts] among the [poorest] classes by which many of them could be saved...” who are the “men of goodwill” that gladden describes? social darwinists wealthy people immigrants reformers
  
• the arrow shows that the bond between the chlorine atom and the fluorine atom is . the electrons in the bond are pulled , and the chlorine atom is .
  
• suppose tangent (x) = startfraction 7 over 2 endfraction where 180° < x < 270°. what is the value of sin(2x)?
  
• when hughes compares “a dream deferred” to “a raisin in the sun,” he means the dream a tastes extra sweet. b has shriveled up. c has health benefits. d is inexpensive.
  
• snapdragons have a pattern of heredity for flower color called incomplete dominance. if the flower-color genotypes are known in a population of snapdragons, you can calculate the allele frequencies for the flower-color alleles r and r’. what are the frequencies of the r and r’ alleles in this population? assume the conditions of hardy-weinberg equilibrium apply. 0.750.500.250.125 genotype frequency allele frequency rr = red = 0.5625 rr’ = pink = 0.375 r’r’ = white = 0.0625 r = r’ =
  
• which best describes the relationship between the successive terms in the sequence below? –3.2, 4.8, –7.2, 10.8, … the terms have a common difference of 8. the terms have a common difference of 1.6. the terms have a common ratio of –1.5. the terms have a common ratio of –0.67.
  
• here is the api for a robot library. // moves the robot forward function moveforward(); // turns the robot to the left function rotateleft(); // turns the robot to the right function rotateright(); // checks if a robot can move in any direction // direction {string} - the direction to be checked // return {boolean} - true if the robot can move in that direction, otherwise returns false function canmove(direction); which code segment will guarantee that the robot makes it to the grey square without hitting a wall or a barrier (black square)?
  
• a null hypothesis is being tested. how does the confidence level affect the testing process? a. if you have a high confidence level, the chance of rejecting the null hypothesis is rare. b. if you have a low confidence level, the chance of rejecting the null hypothesis is nonexistent. c. if you have a low confidence level, the chance of rejecting the null hypothesis is rare. d. if you have a high confidence level, the chance of rejecting the null hypothesis is high.