Given a mean of 61.2 and a standard deviation of 21.4, within how many standard deviations of the mean do the values 45,78,62,90, and 31 fall?
a.0
b.1
c.2
d.3

What is the value of 1/3x + 7x when x = 5

You are cycling around europe with friends. a cycling festival is starting soon in barcelona. it will take 4.5 hours to cycle there. how many minutes in total is this?

What is the value of the expression below? 148+(-6)| + |– 35= 7|