Which expressions represents the distance between Point A and Point B? Select all that apply.

X+ y = k 2x + 3y = k + 1 the point of intersection of the lines has an x-coordinate of a.2k + 1 b.-2k + 1 c.2k - 1

Solve each quadratic equation by factoring and using the zero product property. x^2 - 8x + 30 = 3x

In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.