Evaluate the function rule for the given value.
f(x) = 3x for x = –5
1/243
1/729
–125
–15
To evaluate the function rule f(x) = 3x for x = -5, we substitute -5 in place of x:
f(-5) = 3(-5)
f(-5) = -15
Therefore, the function rule for the given value is -15.