/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Q13. BOOKS Akira bought one new book ... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 1: Q13. (page 12)

BOOKS Akira bought one new book for \(20 and three used books for \)4.95 each. Write and evaluate an expression to find how much money the books cost.

Short Answer

Expert verified

The expression is x+3yand total cost of the books is $34.85.

Step by step solution

01

Step 1. Defining the variable.

Let $x be the cost of 1 new book.

And $y be the cost of 1 old book.

Thus, 1 new book and 3 used books cost $x+3y

02

Step 2. Example of finding total cost.

If $5 be the cost of one book, then the total cost of 10 books will be

$鈥�(5脳10)=鈥�$鈥�50

03

Step 3. Finding the total cost.

The cost of one new book bought by Akira is $20

And the cost of one used book by Akira is $4.95

Thus, the cost of all books is given by,

x+3y=$20+3脳$4.95=$34.85

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Solve each equation.

z=32+4(-3)

Emily made 75% of the baskets that she attempted. If she made 9 baskets, how many attempts did she make?

Express the relation shown in each table, mapping, or graph as a set of ordered pairs.

Use a tree diagram to find the sample space for each event. State the number of possible outcomes.

The spinner at the right is spun and two coins are tossed.

A football team is on the 35-yard line. The quarterback is sacked at the line of scrimmage. The team gains 0 yards, so they are still at the 35-yard line. Which identity or property does this represent? Explain.
See all solutions

Recommended explanations on Math Textbooks

Decision Maths

Read Explanation

Theoretical and Mathematical Physics

Read Explanation

Statistics

Read Explanation

Applied Mathematics

Read Explanation

Calculus

Read Explanation

Pure Maths

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.