13) Is the equation true, false, or open?
4x+y - 7
A)
Open; there is a variable.
B)
True; the expressions are the same for all values of the variables
False; the expressions are never the same

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

2/3

step-by-step explanation:

answer: c.  

step-by-step explanation:

mixtures containing substances that get attracted to magnet can be separated using a magnet. we can separate iron from a mixture of sand and iron, as only iron attracts to the magnet.

2

step-by-step explanation: