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Calculating income and substitution effects

Consider a simple quasi-linear utility function of the form $U(x,y)=x +ln(y)$. For this problem, assume that you have “enough” income, so that the optimal consumption bundle is where: $x,y >> 0$....
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Find optimal price from demand function?

I've been struggling with this for hours, trying to figure out how to solve this. "A perfectly competitive market has the marginal cost function, c (cost is C(y)=cy) and is facing the demand function:...
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How do you know if a good is a complement or a substitute from given demand and supply functions? [closed]

QD1 = 190 - 2P1 - 2P2 QS1 = - 10 + 2P1 QD2 = 240 - 2P1 - 4P2 QS2 = - 40 + P2 Are these goods substitutes or complements?
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Housing bubble and financial crisis [closed]

Can anybody explain me easily what is housing bubble and how it cause financial crisis?
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We know that an equal and simultaneous increase in G and T will cause…?

My textbook says GDP will increase because all of the tax money will go into G, whereas only part of income goes into C. However, since savings = investment, wouldn't an increase in taxes (and ...
I need to estimate the function expressions for $TVC$ and $AVC$ from the $MC$ function for different amounts of quantity $(Q)$ From the solutions I have, that For $Q \leq 50$ $MC1(Q) = -Q + 100$ \$...