Pls help I will mark brainliest I need this done and idk what it is

In the diagram, gef and hef are congruent. what is the value of x

The party planning committee has to determine the number of tables needed for an upcoming event. if a square table can fit 8 people and a round table can fit 6 people, the equation 150 = 8x + 6y represents the number of each type of table needed for 150 people.

I'm marking the brainliest and it's 15 points