The answer is A cause 30% is 0.7 and f(n-1) equals the amount being sold the +50 is for every 50 new one and the the 235 is for what they started with
Answer:
93
Step-by-step explanation:
Add: 67+41+91+68=267
Subtract: 360-267=93
Hope this helps
Answer:

Step-by-step explanation:
If there is 1500 cellular phones per 1000 people, then the number of phones per person is:

Now we know that 
Answer: He will have 3,200 in 5 years.
Step-by-step explanation: This is because 4% of $400 is 160, and if you multiply that by 5 you get 800, then you just subtract that from the total amount and you get your final answer.
Answer:
infinite
Step-by-step explanation: