Emily and Joann decide to trade jewelry collections. After the swap Joann say, “wow! I now have 25% more pieces of jewelry”. Emily says, “ I have 15 fewer pieces of jewelry.” How many pieces of jewelry did Emily have originally?

Asalesperson earns $320 per week plus 8% of her weekly sales. the expression representing her earnings is 320 + 0.08x. which of the following describes the sales necessary for the salesperson to earn at least $1000 in the one week?

Nine more than four times a number is the same as one less than twice the number. find the number?

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?