The times per workout an athlete uses a stair climber are normally distributed with a mean of 20 minutes and a standard deviation of 5 minutes. What percentage of athletes use the stair climber for
less than 18 minutes?

34.46%
48.40%
51.60%
65.54%

Phyllis and chen are saving money to go to a football game. each friend starts with some money and saves a specific amount each week. phyllis made a graph to show the total she has saved at the end of each week. chen wrote an equation to show the total, y, he has saved at the end of each week, x. y = 15x + 15 compare the amount that each friend has when both friends start saving. select the correct answer from the drop-down menu to complete the statement. phyllis starts with $ and chen starts with $

What is the area of mnp? 40 m2 60 m2 68 m2 127.5 m2

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?