options: Understand addition as putting together and adding to, and understand subtraction as taking apart and taking from.

Create equations that describe numbers or relationships

Represent and solve equations and inequalities graphically.

Understand properties of multiplication and the relationship between multiplication and division.

Analyze patterns and relationships.

Interpret the structure of expressions.

Work with equal groups of objects to gain foundations for multiplication.

Solve equations and inequalities in one variable.

Represent and solve problems involving addition and subtraction.

Solve problems involving the four operations, and identify and explain patterns in arithmetic.

Understand the connections between proportional relationships, lines, and linear equations.

Understand the relationship between zeros and factors of polynomials.

Use properties of operations to generate equivalent expressions.

Understand solving equations as a process of reasoning and explain the reasoning.

Reason about and solve one-variable equations and inequalities.

Represent and solve problems involving multiplication and division.

Solve real-life and mathematical problems using numerical and algebraic expressions and equations.

Solve systems of equations.

Understand and apply properties of operations and the relationship between addition and subtraction.

Use the four operations with whole numbers to solve problems.

Analyze and solve linear equations and pairs of simultaneous linear equations.

Write expressions in equivalent forms to solve problems.

Multiply and divide within 100.

Perform arithmetic operations on polynomials.

Gain familiarity with factors and multiples.

Write and interpret numerical expressions.

Work with addition and subtraction equations.

Apply and extend previous understandings of arithmetic to algebraic expressions.

Rewrite rational expressions.

Add and subtract within 20.

Work with radicals and integer exponents.

Represent and analyze quantitative relationships between dependent and independent variables.

Use polynomial identities to solve problems.

Generate and analyze patterns.
problem_activity: Problem 1
Below is a piecewise function that relates yards traveled and seconds.
[IMG]
Write a story that would result in this graph to model the situation.
Problem 2
Your favorite dog groomer charges according to your dog’s weight. If your dog is 15 pounds and under, the groomer charges $35. If your dog is between 15 and 40 pounds, she charges $40. If your dog is over 40 pounds, she charges $40, plus an additional $2 for each pound.
Write a piecewise function that describes what your dog groomer charges.
Graph the function.


correct_option_index: 1