In a simple, closed economy (no government or foreign sector), disposable income increases from $2,000 to $3,000. If consumption increases from $1,500 to $2,100, the marginal propensity to save is: 0.40. $400. 0.80. $600.

Betty contracted with scooby’s skate store to deliver a pair of skates to jake for his birthday. scooby’s owner was going on a trip and delegated the delivery of the skates to brian. brian failed to make delivery.can jake sue brian for breach of contract, as he was not a party to the original contract? explain your answer. brian was not a party to the original contract. why would a court hold him responsible for failing to make delivery? if you do not think a court would hold him responsible, explain your answer. can jake sue scooby’s skates for breach of contract? explain your answer.