Jalissa bought a backpack for $30 and n notebooks for $2.50 each.

a. write a function that shows the amount jalissa spent on her backpack and n notebooks.
b. if she spent $40, how many notebooks did she buy?

Danielle earns a 7.25% commission on everything she sells at the electronics store where she works. she also earns a base salary of $750 per week. what were her sales last week if her total earnings for the week were $1,076.25?

What are the digits that repeat in the smallest sequence of repeating digits in the decimal equivalent of 24/11?

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?