Answer:
Population after n years = Present Population =(1+
100
r
)
n
Population after 2 years =50000(1+
100
5
)
2
=50000(
100
105
)
2
=50000×
100
105
×
100
105
=5×105×105=55125
Step-by-step explanation:
Ann wants to choose from two telephone plans. Plan A involves a fixed charge of $10 per month and call charges at $0.10 per minute. Plan B involves a fixed charge of $15 per month and call charges at $0.08 per minute.
Plan A $10 + .10/minute
Plan B $15 + .08/minute
If 250 minutes are used:
Plan A: $10+$25=$35
Plan B: $15+$20=$35
If 400 minutes are used:
Plan A: $10+$40=$50
Plan B: $15+$32=$47
B is the correct answer. How to test it:
Plan A: $10+(.10*249 minutes)
$10+$24.9=$34.9
Plan B: $15+(.08*249 minutes)
$15+$19.92=$34.92
Plan A < Plan B if less than 250 minutes are used.
Answer:
1
Step-by-step explanation:
6x+10=2x+14
6x-2x=14-10
4x=4
x=1
Answer: It is 7
Step-by-step explanation: