Yolanda used half cup of sugar and 2/3 cup of milk how many cups of ingredients did Yolanda use all together

Which one is true about the hexagons ?

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

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.