Answer:
4x2 + 23x – 72
= (4x - 9)(x+8)
Step-by-step explanation:
Let me see a better picture
Answer:
16 hours
Step-by-step explanation:
= 
25x = 400
x = 16
Answer:
3
Step-by-step explanation:
So we have the function:

To evaluate the value of f(-2), substitute -2 for x. Thus:

Square first:

Multiply:

Now, subtract:

So:

And we're done!