5. The contrapositive is the equivalent one.
If P then Q
becomes
If not Q then not P.
We have P: student plays basketball and Q: student is over 6 feet so we're looking for
If the student isn't over 6 feet then the student doesn't play basketball
Answer: 2nd one
6.
That's the addition property of equality, second choice. We add 4 to both sides of an equation to get an equally valid equation.
It's also technically the subtraction property because we could subtract -4 from both sides. They're probably looking for the other answer.
