In a laboratory the weight of a certain plant is measured every day. The weight on the first day was 2 g and on the following days were 6 g, 18 g and 54g.
How can we express the weight of the plant on the nth day?
A. 2 x 3^n g
B. 3 x 2^n-1 g
C. 3^n -1g
D. 2 x 3^n-1 go

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

step-by-step explanation:

there are 36 inches in a yard

25 : 36 = 0.69 yards (you can round to 0.70)