If two lines segments have the same length which of the following must be true

Renita analyzed two dot plots showing the snowfall during the winter months for city a and for city b. she found that the median snowfall is 5 inches less in city a than in city b. the mean snowfall is about 2 inches less in city a than in city b. which explains why there is a difference in the measures of center for the sets of data?

Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1

The value of the expression 16-^3/4 8 1/8 -6 6 1/40 1/64