Question

Question will be in picture

Answer 1

Given that the total money Elise had, was $30.

Since she spent $18 on gifts and the rest on 3 corn dogs.

Let the cost of a corn god be 'x' dollars. Then the cost of 3 corn dogs will be,

`\begin{gathered} \text{Expense on corn dogs}=\text{ No. of corn dogs}*\text{ Cost of 1 corn dog} \\ \text{Expense on corn dogs}=3* x \\ \text{Expense on corn dogs}=3x \end{gathered}`

So it is found that Elise spent $(3x) on corn dogs.

Since she had spent all the money in buying these two things, the total exprense must be equal to the total money Elise had in the beginning,

`\begin{gathered} \text{Expense on corn dogs}+\text{ Expense on gifts}=30 \\ 3x+18=30 \end{gathered}`

Thus, the required equation is obtained.

Therefore, option (a) is the correct choice.