A railroad crew can lay 6 miles of track each day. They need to lay 162 miles of track. The length, L ( in miles), that is left to lay after d days is given by the following function. L(d)=162-6d

Pls you gave the information but you didn't tell us what to find

answer: 15

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