Bottles of sparkling water usually cost $1.69 each. This week they are on sale for 4 for $5. How much would it cost to pay for 4 bottles of water LAST week?

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%

Acollection of coins has value of 64 cents. there are two more nickels than dimes and three times as many pennies as dimes in this collection. how many of each kind of coin are in the collection?