In the coordinate plane, point H has coordinates
(2,5) and is the midpoint
of the line segment GI.
The coordinate of points
G and I are (x, 12) and
(7,-2), respectively. What
is the value of x?

(-3,12)

Step-by-step explanation:

because (2,5) is the midpoint of GI and one of the known values was (7,-2). if u have a graphing calculator or use a graphing website, it shows (-3,12), and -3 being the missing x value.

homozygous. one is homozygous, while two is heterozygous.

if you are saying purchasing 3 social media ads and one newspaper ad counts as one purchase then there are:

6 purchases

if you are asking how many of each then:

18 social media ads

6 newspaper ads