Jen deposited $750 in her savings account. The account earns 2% simple interest per year. She has the money in her account for 2
1 answer:
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Answer:
Step-by-step explanation:
Let the total number of batteries produced daily be represented by x.
7/8 of the batteries are packaged immediately.
So the total number of packaged batteries =
Remaining batteries =
=
Two third of the remaining batteries are sent to charity.
So the total number of batteries sent to charity=
=
Remaining batteries are faulty.
So the total number of faulty batteries =
=
=
So the faction of batteries which are faulty =
=
=
Answer:
(B)
Step-by-step explanation:
Volume of fluid in the tank =1000 gallons
Initial Amount of Salt in the tank, A(0)= 30 pounds
Incoming brine solution of concentration 2 pounds of salt per gallon is pumped in at a rate of 4 gallons per minute.
Rate In=(concentration of salt in inflow)(input rate of brine)
The resulting mixture is pumped out at the same rate, therefore:
Rate Out =(concentration of salt in outflow)(output rate of brine)
Therefore:
The rate of change of amount of salt in the tank,