You have an 7-by-5-inch photo of the math club that must be reduced to a size of 5.6 inches by 4 inches for the school yearbook. what percent does the photo need to be reduced to in order for it to fit in the allotted space?

20%

Step-by-step explanation:

The photo has a 7-inch length and 5-inch width and you have to reduce it into a 5.6-inch length and 4-inch width.

The percentage reduces for the length will be:

100% - (5.6 inch / 7 inch * 100%)= 20%

The percentage reduce for the width will be:

100% - (4 inch / 5 inch * 100%)= 20%

Then, the photo needs to be reduced by 20% in order to fit the allotted space.

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