Given f(x) = 2x - 5, find f(-3a).
okay were does the a come in here? do I just write -3a in place of x as i did before?
To find f(-3a), you'll need to substitute -3a in place of x in the function f(x) = 2x - 5. So, let's substitute the value:
f(-3a) = 2(-3a) - 5
To simplify, we can multiply -3a by 2:
f(-3a) = -6a - 5
So, the expression for f(-3a) is -6a - 5.