7/9x=56

answer and get 45 points plz
need

Asequence of numbers begins with 12 and progresses geometrically. each number is the previous number divided by 2. which value can be used as the common ratio in an explicit formula that represents the sequence? 1/2 2 6 12

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

Which shows the first equation written in slope-intercept form? 1/2 (2y + 10) = 7x