Lesson 3: Practice Problems
Problem 1
What is the final elevation if
A bird starts at 20 m and changes 16 m?
A butterfly starts at 20 m and changes -16 m?
A diver starts at 5 m and changes -16 m?
A whale starts at -9 m and changes 11 m?
A fish starts at -9 meters and changes -11 meters?
Problem 2
One of the particles in an atom is called an electron. It has a charge of -1. Another particle in an atom is a proton. It has charge of +1. The charge of an atom is the sum of the charges of the electrons and the protons. A carbon atom has an overall charge of 0, because it has 6 electrons and 6 protons and
charge from | charge from | overall | |
---|---|---|---|
carbon | |||
neon | |||
oxide | |||
copper | |||
tin |
Problem 3
Add.
Problem 4 From Unit 4 Lesson 8
Last week, the price, in dollars, of a gallon of gasoline was
Problem 5 From Unit 2 Lesson 7
Decide whether each table could represent a proportional relationship. If the relationship could be proportional, what would be the constant of proportionality?
Annie’s Attic is giving away $5 off coupons.
original price
sale price
Bettie’s Boutique is having a 20% off sale.
original price
sale price