5. if f(x) = -x²+x, the which of the
following expressions represents
f (x)?
(-x2+x++x)
a. limn-
0 h
(-x2+x++x)
b. limn-a-
+h)2 +x++x)
c. limn-0-
(-x2+x+ + x)
d. limn-
a
x
-a
e. none of these

The table below represents the displacement of a fish from its reef as a function of time: time (hours) x displacement from reef (feet) y 0 4 1 64 2 124 3 184 4 244 part a: what is the y-intercept of the function, and what does this tell you about the fish? (4 points) part b: calculate the average rate of change of the function represented by the table between x = 1 to x = 3 hours, and tell what the average rate represents. (4 points) part c: what would be the domain of the function if the fish continued to swim at this rate until it traveled 724 feet from the reef? (2 points)