CAASPP Claim 3 Target E

Emily is solving the equation  $2\left(x+9\right)=4\left(x+7\right)+2$ . Her steps are shown.  Click on the first step in which Emily made an error.

• Step 1
  

• Step 2
  

• Step 3
  

• Step 4
  

• Step 5
  

Emily is solving the equation  $2\left(x+9\right)=4\left(x+7\right)+2$ . Her steps are shown.  Identify the mistake and click on the correct solution to Emily's original equaiton.

• -10.5
  

• -6
  

• -2
  

• 0
  

• 2
  

Consider this solution to a problem.  Click on the step in which the mistake is made.

• Step 1
  

• Step 2
  

• Step 3
  

• Step 4
  

Tags

CCSS.HSA.REI.A.1

A student solves a quadratic equation this way.  The solution is incorrect. Identify the step that does not follow logically from the previous step.

• Step 1
  

• Step 2
  

• Step 3
  

• Step 4
  

Tags

CCSS.HSA-REI.B.4B

Brandon uses the following reasoning to find the length c of the third side in the triangle shown. "The two legs of the triangle are 5 and 12. I know by the Pythagorean Theorem that  $5^2+12^2=c^2$ . I calculate  $5^2+12^2=25+144=169$ . My calculator says that the square root of 169 is 13, so c=13." Which statement is true about this reasoning?

• Brandon's reasoning is correct.
  

• The Pythagorean Theorem does not apply to this triangle.
  

• The Pythagorean Theorem applies, but Brandon made a calculation error.
  

• It is true that c=13, but Brandon's reasoning is incorrect because he used a calculator.
  

Tags

CCSS.8.G.B.8

Sherry wants to enlarge a photograph to 300% of its original size. The machine she is using can only make enlargements for the following percentages: 100%, 125%, 150%, and 200%. Sherry thinks that she should enlarge the photograph by 100% and then by 200% to get a total enlargement of 300%. Is Sherry correct?

• Yes

• No

Tags

CCSS.7.G.A.1