What is the 7 described as in 2 x 5 + 7( 3 + 13)?

Can someone me with this problem . show your work .

Points a, b, and c form a triangle. complete the statements to prove that the sum of the interior angles of triangle abc is 180

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?