A ten pack of pens cost $1 more than two times the cost of a single pen. If you buy 4
single pens and 6 ten packs of pens, the total
bill is $28. Find the approximate cost of a
single pen.

Look at this expression. a3b3c a-3b-3c-1 which of the following is the simplest form of the expression above?

Recall that the owner of a local health food store recently started a new ad campaign to attract more business and wants to know if average daily sales have increased. historically average daily sales were approximately $2,700. the upper bound of the 95% range of likely sample means for this one-sided test is approximately $2,843.44. if the owner took a random sample of forty-five days and found that daily average sales were now $2,984, what can she conclude at the 95% confidence level?

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 5x^2 + 10x