Optimal Cost According to AAA (Automobile Association of America), on January 24, 2005, the national average price per gallon for regular unleaded (87-octane) gasoline was $1.84, and the price for premium unleaded (93-octane) gasoline was $2.03. (a) Write an objective function that models the cost of the blend of mid-grade unleaded gasoline (89- octane). (b) Determine the constraints for the objective function in part (a). (c) Sketch a graph of the region determined by the constraints from part (b). (d) Determine the blend of regular and premium unleaded gasoline that results in an optimal cost of mid-grade unleaded gasoline. (e) What is the optimal cost? (f ) Is the cost lower than the national average of $1.96 per gallon for mid-grade unleaded gasoline?

Exam2StudySmartQuestions 4/9/1611:51PM BiologicalFoundations o Whenaneuronsendsasignal,itissendinganelectricalimpulsedownitsbody.Itstart inthedendrites,wheretheactionpotentialfromanotherneuronisreceived.The neurotransmittersfromthepresynapticneuroncausesligandgatedsodiumchannelto open.Thisinfluxofsodiumthrowsoffthethreshold,whichis-70mV.Ifthemembrane potentialreachesthreshold,moreandmoresodiumchannelswillopenandtheneuron willdepolarize,sendingdowntheactionpotential.Astheactionpotentialtravelsdown theaxon,moresodiumchannelsopen.Aftertheithastraveledthelengthoftheaxon, sodiumchan