Answer:
no clue sorry
Step-by-step explanation:
Interest from first account is :

Interest form second account is :

So, total interest is :

Therefore, total interest is $77.877 .
X*y=72
x = 5y-2
x=72/y
72/y=5y-2
72=5y^2-2y
5y^2 -2y - 72 = 0
(5y+18)(y-4)=0
y = -18/5 discard
or y = 4
4x=72
x=18
(18,4)
Answer:

Step-by-step explanation:
8/2 = 4
answer: it will take Carlos 4 hours to walk 8 miles