CAN ANYONE HELP ME AND EXPLAIN MY MATH HOMEWORK TO ME

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?

Find the slope of the line below . enter your answer as a fraction or decimal. use a slash mark ( / ) as the fraction bar if necessary

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)