a) $f(2)\approx 2.7$ b) $x\approx2.3, 5.6$ c) $[-6, 6]$ d) $[-4, 4]$ e) $(-4, 4)$ f) No, as the graph does not pass the horizontal line test. g) $f$ is odd as it is symmetrical about the origin.
Work Step by Step
Answers can be found by observing the graph of $f$. "Estimate" questions require an approximation only, whereas "state" questions require exact values.