Y= -5x -4 because you would do slope intercept form and sub the y and x in for -4 and 0
Answer:
the final price of the item wud be 15.75
Step-by-step explanation:
To solve this we are going to use a conversion factor. We know that 1 BTU per hour is approximately 778 foot-pounds of energy per hour, so our conversion factor will be:

.
Now we just need to multiply <span>4000 BTU by our conversion factor:
</span>

<span>
We can conclude that the furnace released </span><span>
3,112,000 foot pounds of energy in one hour.</span>