What proportion of the area under the standard normal curve would you expect to be... (Remember to draw the picture of the normal distribution and shade the region designated in the
question. Then use the Z-score tables in the book)
a. between z = -1.2 and z = + 0.6?
b. below z = 1.4?
c. below z = -2.6?
d. above z = -2.0?

To simplify the equation, Erika must isolate the x. This means to get the x by itself. In order to do so, Erika needs to divide 50x by fifty to undo the multiplication. What is done on on side, must be done on the other by the Division Property of Equality. Therefore, Erika must divide seventeen by fifty as well. The answer Erika should end up with is x=0.34