Evaluate f(×)=5×+8 at f(-3)

All you do is substitute -3 for x.

5(-3) + 8 = 0

To evaluate f(x) = 5x + 8 at f(-3), substitute -3 for x in the function:

f(-3) = 5(-3) + 8

Now, we can simplify this expression:

f(-3) = -15 + 8

Combining like terms:

f(-3) = -7

Therefore, f(-3) is equal to -7.

To evaluate f(x) = 5x + 8 at f(-3), we need to substitute -3 for x in the function and compute the result.

First, let's substitute -3 for x in the function:
f(-3) = 5(-3) + 8

Next, we perform the calculations:
f(-3) = -15 + 8

Finally, we simplify:
f(-3) = -7

Therefore, f(-3) = -7.