Question

Nina likes to tip restaurant staff 18% when she enjoys the meal and has good service. Which expression represents the amount of tip, in dollars, that Nina will give when she has a positive experience eating a meal that cost n dollars? 0. 18n 18n StartFraction n over 18 EndFraction n 0. 18.

Answer 1

The expression represents the amount of tip, that Nina will give, when she has a positive experience eating a meal that cost n dollars is $0.18n$. Hence the option A is the correct option.

How to write algebraic expression?

Algebraic expression are the expression which consist the variables, coefficients of variables and constants.

The  algebraic expression are used represent the general problem in the mathematical way to solve them.

Steps to write down the simple algebraic expression-

• Identify all the factors of the expression.
• Assume a variable for the changing values.
• Put a coefficient for the variable, if there is any rate of change of variable.
• Use constant numbers for the fixed values.

Given information-

The tip given by the the Nina is 18 percent.

The cost of food is $n$ dollars.

Here the Nina gave the tip of 18 percent. This 18 percent is the percentage of total cost of the food.

Let $f(n)$ is the required expression.

As the the cost of food is $n$ dollars. Thus the 18 percent of $n$ dollars is,

$f(n)=\dfrac{18}{100} \times n\\f(n)=0.18n$

Thus the expression represents the amount of tip, that Nina will give, when she has a positive experience eating a meal that cost n dollars is $0.18n$. Hence the option A is the correct option.

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