The original price of doritos is the same at both wal-mart and county market. jon found out that wal-mart had doritos on sale at $0.50 off per bag and bought four bags. later that day, he found out that county market had doritos on sale at $1 off per bag and bought six bags. if he paid the same amount at both stores, what was the original price of doritos? show your work!

$2

Step-by-step explanation:

Let the original price of Doritos at Walmart = $x and at County Market = $y.

It is given that the original prices at both the shops is same i.e. x = y.

Also, there is a discount of $0.50 at Walmart and Jon bought 4 bags that day.

This gives us that cost of the bags = 4(x-0.50)

Again, there is a discount of $1 at County market and Jon bought 6 bags that day.

This gives us that cost of the bags = 6(y-1)

As, the new prices is same. Thus, 4(x-0.50) = 6(y-1)

As x = y. This gives,

4(x-0.50) = 6(x-1)

i.e. 4x - 2 = 6x - 6

i.e. 4x - 6x = - 6 +2

i.e. - 2x = - 4

i.e. x = 2.

As x = y, therefore y = 2.

Hence, the original price of bag of Doritos is $2.

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;