Find the percent change if 70 is changed by 12

Which logarithmic equation is equivalent to the exponential equation below? e^a=55(you will receive 34 points)

Segment xz is bisected by point y. if xy = 12x, and the measure of xz = 18x – 6, solve for x

Which of these sequences is a geometric sequence a 1,2,4, 7, 11, 16, 22. b. 2.4.8.14.22.38 c.3.6.9. 15.18,21 d. 3,9,27,81,243,729,