options: Use properties of operations to generate equivalent expressions.

Solve equations and inequalities in one variable.

Add and subtract within 20.

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

Write and interpret numerical expressions.

Use the four operations with whole numbers to solve problems.

Interpret the structure of expressions.

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

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

Apply and extend previous understandings of arithmetic to algebraic expressions.

Solve systems of equations.

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

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

Reason about and solve one-variable equations and inequalities.

Represent and analyze quantitative relationships between dependent and independent variables.

Work with radicals and integer exponents.

Gain familiarity with factors and multiples.

Represent and solve equations and inequalities graphically.

Multiply and divide within 100.

Generate and analyze patterns.

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

Represent and solve problems involving multiplication and division.

Use polynomial identities to solve problems.

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

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

Perform arithmetic operations on polynomials.

Analyze patterns and relationships.

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

Represent and solve problems involving addition and subtraction.

Rewrite rational expressions.

Understand the relationship between zeros and factors of polynomials.

Create equations that describe numbers or relationships

Work with addition and subtraction equations.

Write expressions in equivalent forms to solve problems.
problem_activity: Anton writes a model that describes the number of tacos his friends eat as a function of the cost of the total tacos. Below is a graph of the model.
[IMG]
Anton writes a second model that describes the total cost of the tacos as a function of the number of tacos his friends eat. Below is a graph of the model.
[IMG]
Label the axes appropriately. Which one makes more sense?
How are these two graphs similar? Different?
How are these two equations similar? Different?


correct_option_index: 31