3) Fill in the blanks using the available answer choices. The total cost is \( \qquad \) to the number of lunches bought because (Blank 1 ) the ratios between the quantities \( \qquad \) the same (Blank 2) unit rate. Blank 1 options - proportional Blank 2 options - not proportional - are all equal and have - are not equal and do not have 4) Fill in the blanks using the available answer choices. A saltwater solution for an aquarium calls for 35 parts salt to 1000 parts water. Tareq used 7 tablespoons of salt and 200 tablespoons of water. This situation \( \qquad \) a proportional relationship because (Blank 1) (Blank 2) Blank1 options - represents - does not represent Blank 2 options - both have a ratio of 7:200 - both have a ratio of 3 : 125 - the ratios are different

1. For the statement \[ \text{The total cost is } \underline{\textbf{proportional}} \text{ to the number of lunches bought because the ratios between the quantities } \underline{\textbf{are all equal and have}} \text{ unit rate.} \] Step-by-step reasoning: - The cost increases at the same rate as the number of lunches, which means they are in a proportional relationship. - This holds when the ratios (cost per lunch) are all equal. 2. For the saltwater solution problem: Tareq’s solution uses 7 tablespoons of salt and 200 tablespoons of water. The aquarium recipe calls for 35 parts salt to 1000 parts water. Note that \[ \frac{35}{1000} = \frac{7}{200} \] Thus the ratio in the recipe simplifies exactly to the ratio Tareq used. So we fill in the blanks as \[ \text{This situation } \underline{\textbf{represents}} \text{ a proportional relationship because } \underline{\textbf{both have a ratio of }7:200}. \] Step-by-step reasoning: - The given salt-to-water ratio simplifies from \(\frac{35}{1000}\) to \(\frac{7}{200}\). - Tareq's mixture exactly matches the simplified ratio, confirming the proportionality.