Solve the problem by writing an inequality. a club decides to sell t-shirts for $12 each as a fund-raiser. it costs $20, plus $6 per t-shirt to make the t-shirts. write and solve an equation to find how many t-shirts the club needs to make and sell in order to profit at least $100.

Let is us suppose club needs to make x T-shirts in order to profit at least $100.

Then the selling price is given by

Now, we have been given that it costs $20, plus $6 per T-shirt to make the T-shirts. Thus, the cost price is given by

Now, profit is given by

Profit = Selling price - cost price

Now, we have been given that profit is at least $100. Therefore, we have the inequality

Add 20 to both sides

Thus, the club needs to sell 20 T-shirts in order to make at least profit of $100

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;