Is this graph a function or non function help me please

Some boys and girls were asked if they had a pet. one third of the group were boys. there were 20 boys. 20% of the girls had a pet. boys with a pet : girls with a pet = 1 : 5 i need to know how many girls there are.

The number of fish in a lake can be modeled by the exponential regression equation y=14.08 x 2.08^x where x represents the year

1. find the area of the unshaded square 2. find the area of the large square 3. what is the area of the frame represented by the shaded region show