Please someone help me with this question for 4th grade thank you

Asystem of equations has 1 solution.if 4x-y=5 is one of the equations , which could be the other equation ?

Due to bad planning, two of the local schools have their annual plays on the same weekend. while 457 people attend one, and 372 attend the other, only 104 people were able to attend both. how many people went to at least one play?

The area of the map is the product of the length and width. write and expression for the area as the product of the two binomials do not multiply