An increase in spending of $25 billion increases real gdp from $600 billion to $700 billion. The marginal propensity to consume must be "4".
<h3>
What do you mean by Marginal Propensity to consume?</h3>
The marginal propensity to consume is refers to as the proportion of any change in income that is spent on consumption.
In economics, this term is used to refer to the measurement made in order to determine consumption when the rent is increased by one unit. This measurement is nothing more than a mathematical relationship to calculate how people invest in consumption or save the income that is increased.
Calculation:

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The addition of the decimal number that's given will be -14.8
<h3>How to calculate the decimals?</h3>
It should be noted that decimal numbers are the numbers that have a whole number and the fractional part is separated by a decimal.
In this case, the addition will be:
= -2.6 + (-12.2)
= -2.6 - 12.2
= -14.8
In conclusion, the correct option is -14.8.
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Answer:
Down Below
Explanation:
The resources must be valuable, rare, imperfectly imitable, and non-substitutable.
That statement is false.
In order to catch up with rich countries, a country with low income probably need to maintain more than 100% growth rate in about 10 years.
Because if the country only increases its growth rates slightly, the rich countries may grow even further during that period.