How do you change 4.8 into a mixed fraction

Chandler was a caretaker at the state zoo. he noticed that the number of animals adopted by the zoo increased at a constant rate every year since 2010. which of the following graphs shows the slowest rate at which the animals in the zoo were adopted?

At which value in the domain does f(x) =0?

The value of the expression 16-^3/4 8 1/8 -6 6 1/40 1/64