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he traveled 40 mi in 40 min so the speed is 1 mi /1 min so the slope would be rise in ...

The question is incomplete.

so we know 2 points, (400, $390) and (780, $466) first answer is.. F(C)= .2C+ 310 for slope take y2-y1/x2-x1, get .2 then take point slope form y-y1=m(x-x1).. end up with y=.2c+310

a) d(t) = 50t, where t is in hours b) c) The slope represents his velocity d) Cars speed in miles per hour

d = 60t, distance in miles

qa distance travelled d s = 40 mi time taken t = 40 min = 2/3 h s = 40/[2/3] * t = 60t qb 60 qc speed in mph

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Well that's just silly, Ann Arbor isn't on I-96, it's on I-94!