Can someone me get the answer, ? the answer is correct from the red box

1. $50

2. $144

3. $425

4. $617.5

Step-by-step explanation:

1. Original price (P) = $40 and markup (r) = 25%

So, the original price will increase by 25%.

Hence, the new price after markup will be

=

=

=

= $50 (Answer)

2. Similarly, if original price = $90 and markup = 60%, then the new price after markup will be

=

= 90 × 1.6

= $144 (Answer)

3. Similarly, if original price = $250 and markup = 70%, then the new price after markup will be

=

= 250 × 1.7

= $425 (Answer)

4. Similarly, if original price = $475 and markup = 30%, then the new price after markup will be

=

= 475 × 1.3

= $617.5 (Answer)

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:

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