Chapter 1: Q39. (page 7)

You can evaluate the expression $50 - d$ to find the amount you have left on a $50 gift card after you have spent d dollars. Find the amount left after you have spent $18.

Short Answer

Expert verified

The amount left after spending $18 is$32.

Step by step solution

Step-1 – Apply the concept of Variable

In any expression or equation, the variable is an unknown quantity. It may be any alphabet or any special symbol.

Step-2 – Given expression to find the amount

The expression $50 - d$ gives the amount left in a card after spending d dollars from it.

So, if you have spent $5, then the remaining amount in the card will be $50 - 5 = 45$ dollars in it.

Step-3 – Find the amount after spending $18

Initially there were $50 in the gift card.

And the expression that gives the remaining amount after spending the d dollars is given by $50 - d$ .

So, to find the remaining amount after spending $18, substitute 18 for d in above expression and simplify further as shown below,

\begin{array}{l} 50 - d \\ = 50 - 18 \\ = 32 \end{array}

Thus, the amount left after you have spent $18 is $32.

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You can evaluate the expression $50 - d$ to find the amount you have left on a \(50 gift card after you have spent d dollars. Find the amount left after you have spent \)18.

Short Answer

Step by step solution

Step-1 – Apply the concept of Variable

Step-2 – Given expression to find the amount

Step-3 – Find the amount after spending $18

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You can evaluate the expression 50-d to find the amount you have left on a \(50 gift card after you have spent d dollars. Find the amount left after you have spent \)18.

Short Answer

Step by step solution

Step-1 – Apply the concept of Variable

Step-2 – Given expression to find the amount

Step-3 – Find the amount after spending $18

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Math Textbooks

Theoretical and Mathematical Physics

Pure Maths

Probability and Statistics

Logic and Functions

Calculus

Statistics

Study anywhere. Anytime. Across all devices.

You can evaluate the expression $50 - d$ to find the amount you have left on a \(50 gift card after you have spent d dollars. Find the amount left after you have spent \)18.