If a=5 and b=4, then 2a +b=

14

Step-by-step explanation:

2 (5) + 4

10 + 4

14

175

step-by-step explanation:

2 inches x 10 miles = 200 miles - 3 inches = 175

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