Plss help help help can someone plss help me ~plss respect my question~

I really need this right now so please​

Me ! write an equation for the interior angles of this triangle that uses the triangle sum theorem

Karen is financing $291,875 to purchase a house. she obtained a 15/5 balloon mortgage at 5.35%. what will her balloon payment be? a. $220,089.34 b. $219,112.46 c. $246,181.39 d. $230,834.98

Molly shared a spool of ribbon with 12 people. each person received 3 feet of ribbon. which equation can she use to find r, the number of feet of ribbon that her spool originally had?