Answer:
Step-by-step explanation:
The reciprocal of 5: 
The negative reciprocal of 5: 
Old price: p1 = $ 3.90;
New price: p2 = $ 3.40.
The percentual decrease is given by
d(%) = [ (p2 - p1) / p1 ] * 100 %
d(%) = [ (3.40 - 3.90) / 3.90 ] * 100 %
d(%) = [ - 0.50 / 3.90 ] * 100 %
d(%) = - 0.128 * 100 %
d(%) = - 12.8 % (approximately)
So the price fell 12.8 % approximately.
I hope this helps. =)
8000 because 3 is less than 5 so you stay the same (which is 8)
D. After 150 minutes, the 5 cent one is more.
Hope this helps!
