Respuesta :

ProdigyJay101

Answer:

the first one

Step-by-step explanation:

its right because you have to try and solve it out to get the answer so u subtract 4 the divide by 10 to get r= 8

MathTutors

Answer: 10r+4=84

Step-by-step explanation:

Since the problem states 10 reams of paper at an unknown price per ream of paper, we can write it as 10r. r is the price per ream of paper. the tax would be written as +4 because that is the tax stated. The 84 would be the total price. Therefore, the equation would be 10r+4=84.