Bridges Unit 2 Test Equations ACC Test A

Which of the following is a solution to the equation:

$x+3=x^2-9$

• -2

• -3

• 2

• 4

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A.REI.1 Identifying Solutions

Which of the following is an an answer to the equation:

$\frac{16-x}{16+x}=-1$

• x = 0

• x=16

• x=-16

• No Solutions

• Infinitly Many Solutions

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A.REI.1 Identifying Solutions

Given the following word problem: Three siblings baked b brownies together this weekend. They threw away the 24 burned brownies and split the rest evenly, each taking 10 brownies. How many brownies did they back? Olga comes up with the equations b-24=10 and the teacher tells her she forgot something, what information did she forget to include in her equation

• She forgot to account for the fact that 3 people split the brownies

• The 24 should have been added because you subtract them to undo them in an equation.

• The total of the equation should have been 34 because of the 10 brownies and the 24 thrown away

• The total of the equation should have been 54 because of the 10x3=30 brownies and the 24 thrown away

• Her equation is correct she just needs to solve by adding 24 to both sides, so her answer is 34 brownies

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A-SSE.1 Seeing Structure

Three siblings baked b brownies together this weekend. They threw away the 24 burned brownies and split the rest evenly, each taking 10 brownies. How many brownies did they bake?

(a)  

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A.REI.3 Solving Linear Equations/Inequalities

A-SSE.1 Seeing Structure

Which of the following equation could be used to model: A store is having a sale on car stereos. First a certain percentage is taken off the price, and then the price reduced by a fixed number of dollars, representing the purchase price.

• 0.9x - 10 =116

• 14x + 3x +150 = 1102

• 1500 -120x= 660

• 12x - 300=800

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A-SSE.1 Seeing Structure

Solve:

14x+3x+150=1102

(a)  

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A.REI.3 Solving Linear Equations/Inequalities

Solve:

0.9x - 10 =116

(a)  

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A.REI.3 Solving Linear Equations/Inequalities

Jack won 122 pieces of gum playing hops at the county fair. At School he gave 4 pieces to every student in his math class. He only has 2 remaining. Which equations represents how many students are in his class

• 2x+4=122

• 4x+2=122

• 2x-4=122

• 2x-4=122

• Not enough information

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A-CED.1 Creating Equations

Jack won 122 pieces of gum playing hops at the county fair. At School he gave 4 pieces to every student in his math class. He only has 2 remaining. How many students are in his class

(a)  

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A.REI.3 Solving Linear Equations/Inequalities

A-CED.1 Creating Equations

*For each equation, tell whether it is always, sometimes, or never true, check all that apply.

$5-x^2=6$

• Never true: there can not be a negative square root

• Sometimes true: when x=1

• Sometimes true: when x=-1

• Sometimes true: when x=0

• Always true: No matter value is substituted the suquare of a number will always make the equation equal.

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Equation Solutions

#4COP