Which matrix represents the system of equations?

3x + 5y = −9

x + 5y = 16

Due to financial difficulties the owner of 4 skateboard stores is going to close 2 of his stores. based on the money earned at each store, which two stores should remain open?

Andy has $310 in his account. each week, w, he withdraws $30 for his expenses. which expression could be used if he wanted to find out how much money he had left after 8 weeks?

How many degrees are there in the central angles in a circle