Answer: 46
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Step 1 is to compute the value of r(-4)
r(x) = -5x-5
r(-4) = -5(-4)-5 ... replace every x with -4
r(-4) = 20-5
r(-4) = 15
Now we can do replacements. We can replace the "r(-4)" with 15 because of the last equation above.
So we go from s(r(-4)) to s(15)
Plug x = 15 into the s function
s(x) = 3x+1
s(15) = 3*15+1
s(15) = 45+1
s(15) = 46
In the end,
s(r(-4)) = 46
