Graph the function y is equal to x cubed plus 3 x squared minus 1 Based on the graph, what is the least possible x -value if y is equal to 0 ? Round your answer to the nearest hundredth, if necessary.

To find where the graph has y = 0, solve x³ + 3x² − 1 = 0. The three x-intercepts are approximately −2.88, −0.65, and 0.53, so the least x-value is −2.88. Therefore, the correct choice is negative 2.88.

AI-written and checked against the verified answer.