Find the missing lengths of the sides

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

Which of the following is the sum of 3 1/6 + 6 3/8?

Asalesperson has january sales of $20,000(1,$20,000) and april sales of $80,000 (4,$80,000). what is the rate of change?