A worker in a silver mine descends 72 feet. Use an integer to represent the change in the worker's position.

-72

Step-by-step explanation:

If they descend, this can be represented by a negative number.

Since they descended 72 feet, the worker's change in position can be represented by -72.

So, the answer is -72

5x + 5

step-by-step explanation:

you should always add the diagrams and graphs we cannot see. this particular question is kind of borderline because we can make a graph for you.

(f + g)x = -x^2 +3x + 5 + x^2 + 2x

(f + g)x = 5x + 5

the graph of z = 5x + 5 is shown below. always use desmos when in doubt.