Nia invests $3100 in an account earning 2% interest, compounded annually. The equation that represents this scenario is:
A(n) = 3100(1 + 0.02) - 1
How much will she have in the account in year 4? Round your answer to the
nearest dollar

A=3355.54 dollars

rounded to the nearest dollar is : 3356

Step-by-step explanation:

A(n) = 3100(1 + 0.02)^4

A=3355.54 dollars

(note: i do not think there is -1 at the end of the equation if so your answer will be 3354.54 rounded to the nearest dollar is 3355)

d. 24+-0.114

step-by-step explanation:

the question requires us to calculate the approximate 95% confidence interval for the mean number of ounces of ketchup per bottle in the sample given the following statistics;

sample mean = 24

standard deviation, σ = 0.4

sample size , n = 49

the confidence interval for a population mean is calculated using the formula;

sample mean ± z-score*(σ/sqrt(n))

the z-score associated with a 95% confidence interval, from the standard normal tables, is;

1.96

substituting these values into the formula;

24 ± 1.96*(0.4/7)

= 24 ± 0.112

from the alternatives given, choice d is closest to the above expression;

step-by-step explanation: