Which of the following is the equation for a circle with a center of (−2, 3) and a radius of 9? (x + 2)2 + (y − 3)2 = 9
(x − 2)2 + (y + 3)2 = 81
(x + 2)2 + (y − 3)2 = 81
(x − 2)2 + (y + 3)2 = 9

Which expression will have the same sum as 3_8 + 1/4?

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)

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.