Given a standardized normal distribution with a mean of 0 and a standard deviation of 1, what is the probability that z is less than 1.57?

Can i get some on 18,20,& 22? or one of them

What is 20+(5 x 2/5 )+ 3 show your work

Starting at home, emily traveled uphill to the hardware store for 606060 minutes at just 666 mph. she then traveled back home along the same path downhill at a speed of 121212 mph. what is her average speed for the entire trip from home to the hardware store and back?