Sophia
College Algebra
UNIT 2 — MILESTONE 2
SUBMIT MILESTONE
177
Question 4
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The value V (in dollars) of an airplane depends on the flight hours x as given by the formula V = 1,800,000 – 250x. After one year, the value of the plane is between $1,200,000 and $1,300,000.
Which range for the flight hours does this correspond to?
2000 <= x <= 2400
2200 <= x <= 2500
1500 <= x <= 1800
1800 <= x <= 2100
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Here are all the tutorials from Unit 2. Use them as needed throughout the Unit 2 Milestone.
UNIT 2 TUTORIALS
2.1 Operations with Expressions
2.1.1 Properties of Addition and Multiplication
2.1.2 The FOIL Method
2.1.3 Adding and Subtracting Radical Expressions
2.1.4 Multiplying Radical Expressions
2.1.5 Rationalizing the Denominator
2.1.6 Terms and Factors in Algebraic Expressions
2.1.7 Properties in Algebraic Expressions
2.2 Solving Equations
2.2.1 Solving Single-Step Equations
2.2.2 Isolating Variables
2.2.3 Solving Multi-Step Equations
2.2.4 Literal Equations
2.2.5 Substitution in Multi-Step Linear Equations
2.2.6 Writing Equivalent Equations
2.3 Inequalities and Absolute Value
2.3.1 Introduction to Inequalities
2.3.2 Set Notation and Interval Notation
2.3.3 Solve Linear Inequalities
2.3.4 Compound Inequalities
2.3.5 Absolute Value Equations
2.3.6 Absolute Value Inequalities
2.4 Arithmetic Sequences & College Algebra in Context
2.4.1 Introduction to Arithmetic Sequences
2.4.2 Summation Notation
2.4.3 Finding the Sum of an Arithmetic Sequence
2.4.4 Distance, Rate, and Time
2.4.5 Determine an Equation in Context
2.4.6 Solving Problems Involving Percents
2.4.7 Solving Mixture Problems using Weighted Average
2.4.8 Converting Unit Rates