Can someone give an explanation and an answer ??

The midpoints of the sides of the large square are joined to form a smaller square. what is the area of the smaller square

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.

The number of students who ride a school bus is 110% of the number of students who walk. how many students ride the school bus?