Suppose that the market research found the following relationships for Apple's iPhone 14 in 2022 Supply equation: 2q-1/4p=100, where q (supply in millions) is the number of iPhone 14s that apple would produce if they could sell them for $p each demand equation: 15q+p=4200, where q (demand in millions) is the number of iPhone 14s consumers would buy if they were sold for $p each  Find the equhibrium price p and supply demand using gauss-Jordan elimination

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Q: Number 13 is the one I am having trouble with. I have to solve for the equation.

A:

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A: Please see the explanation below