If ƒ(x) = x − 4 and g(x) = 3x + 5, find (ƒ + g)(x).

Step-by-step explanation:

We are given the two functions:

And we want to find:

This is equivalent to:

By substitution:

Rearranging yields:

Combine like terms:

Hence:

please refer to the above attachment

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50

answer: all of the odd numbers were opened

the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.