I am a close shape Made of six line segments I have two angles less than a right angle in no right angles what shape am I

Giuseppi's pizza had orders for $931.00 of pizzas. the prices were $21 for a large pizza, 514 for a medium pizza, and $7 for a small pizza. the number of large pizzas was two less than four times the number of medium pizzas. thenumber of small pizzas was three more than three times the number of medium pizzas. how many of each size of pizza were ordered?

What are the exclude value of mn+3m

Math it's appreciated. (picture provided)