Solving a linear inequality is comparable to solving a linear equation because the goals of both are the same, namely to obtain the <u>variable alone</u>.
The right answer, option D, is The Barbara equation<u> did not take</u> into account the number of bottles of water.
<h2>Given:</h2>
The cost of a bottle of iced tea is $1.49.
The cost of a bottle of water is $1.25.
<h3>Barbara created the equation:</h3>

In this question, Barbara multiplies the bottle's selling price by the number of bottles using the coefficient x.
However, she d<u>id not apply</u> any coefficient to the bottle of water.
<h3>
The right equation is:</h3>

where y is the number of water bottles sold to make a $100 profit.
As a result, the right answer is that the Barbara calculation<u> did not take</u> into account the number of bottles of water.
For more information about linear equations, refer below:
brainly.com/question/567493