Can someone please help me with Solving System of Linear Equations..

[algebrastinks]

I am SO confused... I have 8 homework problems I am working on and can't figure them out.

 

[Deleted member 4993]

I am SO confused... I have 8 homework problems I am working on and can't figure them out.

Post your problems - one problem per thread (so you'll have 8 threads).

Please include your work - even if you think it is wrong.

 

[algebrastinks]

This one says What is the Equilibrium price?

y=-75p+400
y=100p+50