Answer:
Explanation:
So we know that Alex is trying to save $230. 
He already has forty dollars so we can take forty away from two hundred and thirty. This leaves us with $190 that we need to save. 
If he is saving $38 per week. We can divide or estimate and multiply. I prefer to multiply so that is the method I will use right now. 
38×5= 190
Therefore, Alex will have enough money to buy a tablet in five weeks. 
I hope I am correct and I explained this in a way that you can understand and do it yourself next time. 
~~LampteyJ~~