Where is the mistake?

2x + 3y = 13

y = 2x + 1

1. 2x + 3(2x+1) = 13

2. 2x + 6x + 3 = 13

3. 4x = 16

4. x = 4

5. y = 2(4) + 1

6. y = 9

What properties allow transformation to be used as a problem solving tool

Paul’s car is 18 feet long. he is making a model of his car that is 1/6 the actual size. what is the length of the model?

As voters exit the polls, you ask a representative random sample of voters if they voted for a proposition. if the true percentage of voters who vote for the proposition is 63%, what is the probability that, in your sample, exactly 5 do not voted for the proposition before 2 voted for the proposition? the probability is