A scale model is a representation of an object with the same shape as the real object. Models
can be larger or smaller than the actual object but are
often smaller

Architects often make scale models of the buildings or
structures they plan to build. Models can give them an
idea of how the structure will look when finished. Each
measurement of the building is scaled up or down by
the same factor
Bob is building a scale model of his bike. He wants
his model to be as long as his bike.
11. If Bob's bike is 60 inches long, how long will his model be?
12. THINK SMARTER If one wheel on Bob's model is 4 inches across, how
many inches across is the actual wheel on his bike? Explain.

Beatrice decides she wants to babysit a few children at the same time to earn the money faster. she tells parents that if they allow her to babysit their children at her house, she will eliminate her automatic $5 tip and will give them an additional $5 discount. (a) write an equation showing the total cost for each client. identify all variables. (b) four parents bring their children to beatrice’s house at the same time for babysitting. beatrice wants to find out how many hours she must babysit the 4 children to earn exactly the $100 she needs in order to buy the present for her mother. write and solve an equation to find the number of hours. justify each step in the solution. (c) one parent decides not to drop off her child. the remaining 3 parents drop their children off at 9 a. m. two of the parents say they will be back at 1 p. m. the third parent says she will pick up her child at 2 p. m. at noon, beatrice realizes she needs feeding the 3 ch

One-third of the people from country a claim that they are from country b, and the rest admit they are from country a. one-fourth of the people from country claim that they are from country a, and the rest admit they are from country b. in a combined census of the two countries, one-half of the total claimed to be from a. what is the ratio of the populations of country a to that of country b.

What is 1/3x5 on anuber line what does it look like on a number line