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Andrea’s work to find the equation of a trend line through the points (48, 61) and (72, 195) is shown below. Andrea’s Work Step 1 m = StartFraction 72 minus 48 Over 195 minus 61 EndFraction = StartFraction 24 Over 134 EndFraction = StartFraction 12 Over 67 EndFraction Step 2 61 = (StartFraction 12 Over 67 EndFraction) (48) + b Step 3 b = StartFraction 3,511 Over 67 EndFraction Step 4 y = StartFraction 12 Over 67 EndFraction x + StartFraction 3,511 Over 67 EndFraction What was the first error that Andrea made?

A- Andrea used the reciprocal of the slope.

B- Andrea made a computational error when she simplified m.

C- Andrea substituted incorrectly when she solved for b.

D- Andrea made a sign error when she solved for b.

Design an er diagram for keeping track of information about votes taken in the u.s. house of representatives during the current two-year congressional session. the database needs to keep track of each u.s. state's name (e.g., texas', new york', california') and include the region of the state (whose domain is {northeast', midwest', southeast', southwest', west'}). each congress person in the house of representatives is described by his or her name, plus the district represented, the start date when the congressperson was first elected, and the political party to which he or she belongs (whose domain is {republican', democrat', 'independent', other'}). the database keeps track of each bill (i.e., proposed law), including the bill name, the date of vote on the bill, whether the bill passed or failed (whose domain is {yes', no'}), and the sponsor (the congressperson(s) who sponsored - that is, proposed - the bill). the database also keeps track of how each congressperson voted on each bill (domain of vote attribute is {yes', no', abstain', absent'}). additional information: