If y varies directly with y, and y = 18 when x = 9, find y when x = 16

the discriminant is 64 + 4*1*12 = 112

this is prime.

step-by-step explanation:

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