Answer:
The piecewise functions accurately represents charges based on Ben's cell phone plan is :

Step-by-step explanation:
Let x be the minutes over cell phone
Let f(x) represents the piecewise function that represents the charges based on Ben's cell phone plan.
We are given that Ben has a cell phone plan that provides 200 free minutes each month for a flat rate of $39.
So,
We are also given that For any minutes over 200, Ben is charged $0.35 per minute.
So, Minutes over 200 = x-200

Hence the piecewise functions accurately represents charges based on Ben's cell phone plan is :

Answer:
I think its the 1st one, but I'm not sure
Answer:
The smallest number is 0.008
Step-by-step explanation:
To find out which number is the smallest we convert the decimals to percentages
That's
0.008 × 100= 0.8%
1/3 × 100 = 33.3%
0.048 × 100 = 4.8%
0.36 × 100 = 36%
1/9 × 100 = 11.1%
Comparing from the above percentages the smallest one is 0.8% which is
0.008.
Hope this helps you.
Answer:
(2x+3) x (x-7)
Step-by-step explanation:
Answer: 601
Step-by-step explanation:
The formula to find the minimum sample size(n) , if the prior population proportion is unknown:
, where E = margin of error ,
= critical z-value for confidence level c.
Given : E = 0.04
Z-value for 95% confidence = 1.96
So, the minimum sample size required = 

Hence, the minimum sample size required = 601