What is the equation of a line that is perpendicular to y= 1/2x - 6 and passes through the point (6,4)?

Perpendicular to a slope of 1/2 is the negative reciprocal slope -1/(1/2) = -2.

y = - 2 x + b

y + 2 x = b

b = 4 + 2(6) = 16

y = -2x + 16

Check:

-2(6)+16=4 good

y = -2x + 16

30 units^2

step-by-step explanation:

area is l × w

the length is 3

and the width is 10

3 × 10= 30 units squared

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