The double number line shows that 44 4 bottles of water cost 1010 10 dollars at a music festival. 00 0 44 4 bottles\text{bottles} bottles 00 0 1010 10 dollars\text{dollars} dollars based on the ratio shown in the double number line, how much does 33 3 bottles of water cost?

 7.5 dollar.

Step-by-step explanation:

Since, here the cost of 4 bottle of waters = 10 dollars.

Therefore, the cost of 1 bottle of waters = =

Thus, the cost of 3 bottle =

=

= 7.5 dollars.

So, the cost of 3 bottle is equals to $ 7.5.

let x be the money she spent so that she can earn the free t-shirt.

since, she already spent $112.49

⇒

also, as per the statement: jennifer must spend $250 or more in order to qualify for a free t-shirt at the store.

then,

we have an inequality i.,e

subtract 112.49 from both sides we get;

therefore, $137. 51 more money does jennifer need to spend so that she can earn the free t-shirt

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;