The amount of simple interest earned, n, varies jointly with the rate of interest, r, and the number of years, t. The simple interest earned is $3.50 when the rate of interest is 2% for 0.5 year.

The perimeter of a rectangle is 40 inches. the table shows some of the possible dimensions for the length and area of the rectangle. length (inches) area (square inches) 2 36 7.5 93.75 10 100 12.5 93.75 18 36 given that the area of the rectangle is dependent on the length of its sides, which graph could best be used to display the relationship shown in the table?