Which data set has the greatest spread for the middle 50% of its data?
a.
{18, 13, 22, 17, 21, 24}
b.
{17, 19, 22, 26, 17, 14}
c.
{13, 17, 12, 21, 18, 20}
d.
{18, 21, 16, 22, 24, 15}
i need more it's confusing a little bit

Find the sum of 4x^{2} -4+6 and -7^{2} +3x+1

Find the value of 1715⋅211.though these numbers aren't quite as nice as the ones from the example or the previous part, the procedure is the same, so this is really no more difficult. give the numerator followed by the denominator, separated by a comma.

Lindsay used two points, (x,y; ) and (+2.82), to find the equation of the line, y = mx + b, that passes through the points. y2-y, first, she used the definition of slope and determined that the value of mis x, - . given this information, which expression must represent the value of b?