they are saying x = 3 so you would use the middle equation
so -4x becomes -4(3)
-4 * 3 =-12
7.2 and 7.3 and I honestly just did guess and check
Answer:
I don't know the answer. .
Answer:


Step-by-step explanation:
By geometric mean property:

Answer:
The magazine that cost $15.24 for 6 issues cost more by $0.60/60 cents.
Step-by-step explanation:
Since $15.24 is 6 issues each and you need to even out the issues add $15.24+$15.24 then you would get $30.48, because its 15.24 each 6 add them both and it would be 12 issues. And the first issue $29.88 for 12 issues is only $29.88 while the other is $30.48 so the one with 6 issues/the second cost more than the first.
60 cents more because 29.88+60=30.48.