How to compare rates and ratios

You are manager of a ticket agency that sells concert tickets. You assume that people will call 4 times in an attempt to buy tickets and then give up. Each telephone ticket agent is available to receive a call with probability 0.1.

What is the five-number-summary of the following data set? Write the numbers separated by commas. 45 8 51 47 31 45 12 55 48

The original price of a jacket for sale at a department store is $80. The store is having a 20%-off sale, and you have a coupon that gives you an additional discount of 10% off the lowest sale price.

The original price of this Jetson V12 all-terrain hoverboard was $299.99. This store is offering it at 35% off the original price on Black Friday. What is the sale price?

At a conference for 250 people, 40% of the participants are french, 45% are americans, 10% are germans, and the rest are of other nationalities. how many french participants are at the conference?

The equation is. - 0.5p-2=p how do I solve this? And show my work

Whats is the first step in solving the quadratic equation

Eight less than a number doubled is twenty more than the number. What is the number?

What is 1 and 1/8 plus 1 and 1/4

Daniella wrote the equation shown to represent "four less than - 3.7 times a number is - 11.9." 4n - (-3.7) = 11.9 Explain her error, include the correct equation in your response.