Afamily of three children and two adults visited a health club. the club charges $y an hour for each child and $x an hour for each adult. if the family does not want to spend more than $39 an hour at the health club, which of the following graphs best models the situation

A3cm×3cm\greend{3\,\text{cm} \times 3\,\text{cm}} 3cm×3cm start color greend, 3, space, c, m, times, 3, space, c, m, end color greend rectangle sits inside a circle with radius of 4cm\blued{4\,\text{cm}} 4cm start color blued, 4, space, c, m, end color blued . what is the area of the shaded region? round your final answer to the nearest hundredth.