4 Given the functions f(x)=x^3-8 and g(x)=3-x find the value of: a f(2) b f(-1) C g(5) d g(-2)

a) To find the value of $f(2)$, we need to substitute $x = 2$ into the function $f(x)$.<br /><br />$f(2) = 2^3 - 8 = 8 - 8 = 0$<br /><br />Therefore, the value of $f(2)$ is 0.<br /><br />b) To find the value of $f(-1)$, we need to substitute $x = -1$ into the function $f(x)$.<br /><br />$f(-1) = (-1)^3 - 8 = -1 - 8 = -9$<br /><br />Therefore, the value of $f(-1)$ is -9.<br /><br />c) To find the value of $g(5)$, we need to substitute $x = 5$ into the function $g(x)$.<br /><br />$g(5) = 3 - 5 = -2$<br /><br />Therefore, the value of $g(5)$ is -2.<br /><br />d) To find the value of $g(-2)$, we need to substitute $x = -2$ into the function $g(x)$.<br /><br />$g(-2) = 3 - (-2) = 3 + 2 = 5$<br /><br />Therefore, the value of $g(-2)$ is 5.