If the marginal propensity to consume is 0.8, full-employment output is $14 trillion, and current output is $13.5 trillion, then investment spending must to reach fullemployment output. a) increase by $0.5 trillion b) decrease by $0.5 trillion c) increase by $0.1 trilliond) increase by $0.4 trillion

c. Increase by $0.1 trillion

Explanation:

Investment spending Multiplier is a concept in economics that measure how a given change in investment increases output. So if current output of $13.5 trillion must increase to $14 trillion, we employ the multiplier formula to derive what amount of investment spending is needed to get $o.5trillion increase in output.

(change in output)/ (change in investment) = 1/(1-mpc)

Note that mpc means marginal propensity to consume.

Let change in investment = X

change in output = 14 - 13.5 = $0.5trillion

mpc = 0.8

(0.5)/X = 1(1-0,8)

0.5/X = 1/0.2

cross multiply

X = 0.1

Thus the needed change in investment is an increase of $0.1 trillion. In other words, if investment increases by $0.1 trillion, current output will increase from $13.5 trillion to $14 trillion.

answer the law of increasing costs;

the answer is "b.the increased supply will create a surplus. "

the essential thought behind price controls is straightforward - utilize the power of law to modify the equilibrium of a market. for instance, the legislature may choose that the steel business needs to survive, and in this way pass a law to set a value floor on steel. this implies all steel sold must offer at or over the floor value, which must be set over the equilibrium cost for it to have any impact. the switch could likewise happen - the administration can choose that steel is excessively costly and set a value roof underneath its equilibrium value, with the goal that all steel must be sold at or beneath that ceiling.