Anumber is being written in scientific notation. the student moves the decimal point to the left 3places and__
a. multiplies by 10^-3
b. multiplies by 3
c. multiplies by 10
d. multiplies by 10^3

square root of 36/6 = 2.449489743

square root of 16/6 = 1.632993162

square root of 6 = 2.449489743

the answer is square root of 16/6 because the square root of 36/6 is the same answer as square root of 6 = 2.449489743

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