Answer:
3 feet per hours
Step-by-step explanation:
To get unit rate divide foot by hours

In 4 years you pay interest of 4000 and if you finish pay the loan in two years you pay only 2000
Can be both, because if all three were negative, it would be
negative*negative= positive
positive*negative=negative
example: -1*-1*-1=-1
but if all three were positive, it would obviously be positive, because any number of positives can't make negatives in multiplication.
Since the slopes are equal they are parallel. I hope this helps.
X=-.5, it’s less than 0, and concave up & increasing in this situation are the same.