the domain of a graph consists of all the input values shown on the x-axis. The range is the set of possible output values, which are shown on the y-axis. hope that helps.
X^2 + 4x -21
= (x +7)(x - 3)
hope that helps
400 is the answer to your question
Apply the Pyth. Theorem:
c^2 = 3^2 + 7^2, or c^2 = 9 + 49 = 58. Thus, c = sqrt(58).
8.8 squared + 9.5 squared = square root 12.94 rounded 12.1
