Which of the equations is the correct representation of the following word problem A student has two grades of 80 and 90. what grade must the students make on the next test to pass the class with a 90 grade average?

(80+90+n)/3=100

(80+90+90)/3=y

(80+90+z)/3z=90

+80+90+x)/3=90

Now max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.

If g^-1(x) is the inverse of g (x) which statement must be true

Sally deposited money into a savings account paying 4% simple interest per year.the first year,she earn $75 in interest.how much interest will she earn during the following year?