Using the supply and demand equations for wheat, solve for the equilibrium price and quantity as functions of I and r

What will be an ideal response?

Setting QS = QD we get:
20r + 100p = 4000 - 100p + 10I
Solving for equilibrium price:
p = 20 + .05I - .1r
Plug this into either supply or demand to find equilibrium quantity
Q = 2000 + 5I + 10r

Economics

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In the above figure, the efficient level of chemicals produced per week is

A) 0 tons. B) 4 tons. C) between 5 and 7 tons. D) 8 tons.

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With respect to water and diamonds, water

A) has a higher marginal utility than diamonds. B) has a lower marginal utility than diamonds. C) is cheaper than diamonds because it has a lower total utility. D) is cheaper than diamonds because it has a higher total utility.

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