Please help ASAP Annabelle mixes x gallons of 85% alcohol solution with 2 gallons of 25% alcohol solution to make a 60% hand sanitizer. A.) How many gallons of 60% sanitizer does Annabelle have?
B.) How much pure alcohol is in x gallons of the 85% solution?
C.) How much pure alcohol is on 2 gallons of the 25% solution?
D.) How much pure alcohol is in the hand sanitizer Annabelle makes when she combines the solutions?
E.) How much pure alcohol is in (2+x) gallons of 60% solution?
F.) Use parts D and E to write an equation.
G.) Solve your equation to find how many gallons of 85% solution Annabelle used?

step-by-step explanation:

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".

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