Hellp

Given a circle with measures of (c, d, and r) and a circle with measures of (c', d', and r'), what is d if c c' = 12 and d' = 0.50? a) 3 b) 6 c) 12 d) 24

Which of the following answers is 7/9 simplified? 7/9 2/9 11/9 2/7

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left