Review: 10.2b Mini-Quiz The revenue R (in dollars) from selling x units of an infant stroller is modeled by

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Review: 10.2b Mini-Quiz The revenue R (in dollars) from selling x units of an infant stroller is modeled by 𝑅=𝑥 35− 1 2 𝑥 , 0<𝑥<35. Find the number of strollers that must be sold to produce a revenue of $580.50.

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Chapter 10 Quadratic Equations and Functions Lesson 10-3a Solving Quadratic Equations by Using the Quadratic Formula

Objective: Students will learn how to solve quadratic equations using the quadratic formula.

Vocabulary a formula that can always be used to solve quadratic equations.

5x2 – x = 2 5x2 – x – 2 = 0 a = 5; b = –1; c = –2 𝑥= 1± 1−(−40) 10 Solve by using the Quadratic Formula. 5x2 – x = 2 5x2 – x – 2 = 0 a = 5; b = –1; c = –2 Quadratic Formula 𝑥= 1± 1−(−40) 10 𝑥= 1± 41 10 Answer: Example 4-2e

Solve by using the Quadratic Formula. and Quadratic Formula = 8±4 19 10 𝑥= 4±2 19 5 Answer: Example 4-2a

Solve x2 – 2x – 35 = 0 Answer: The solution set is {–5, 7}.

Lesson Summary: Objective: Students will learn how to solve quadratic equations using the quadratic formula.

Preview of the next Lesson: Objective: Students will solve word problems by involving quadratic equations using the quadratic formula.

Do not round your answers. Homework 570+571/1,7,13...67 Do not round your answers. Leave your answers as square roots.

Stand Up Please