Answer:
5x+3
Step-by-step explanation:
substitute x for the unknown number
Answer: $768.50
Step-by-step explanation:
If $725 was the price before sales tax, $768.50 would be the total amount after the 6% sales tax increase.
***If you found my answer helpful, please give me the brainliest. :) ***
Answer: 0.951%
Explanation:Note that in the problem, the scenario is either the adult is using or not using smartphones. So, we have a yes or no scenario involved with the random variable, which is the number of adults using smartphones. Thus, the number of adults using smartphones follows the binomial distribution.
Let x be the number of adults using smartphones and n be the number of randomly selected adults. In Binomial distribution, the probability that there are k adults using smartphones is given by

Where p = probability that an adult is using smartphones = 54% (since 54% of adults are using smartphones).
Since n = 12 and k = 3, the probability that fewer than 3 are using smartphones is given by

Therefore, the probability that there are fewer than 3 adults are using smartphone is 0.00951 or
0.951%.
Answer:
Option B will be cheaper.
Step-by-step explanation:
Option A:
1.99*80=159.20
Option B:
5.99*24=143.76
*you get 24 becasue there are 24 months in 2 years.