Answer:
Step-by-step explanation:
[logical equivalence]
[morgan laws]
if
is true, then
is true and
is too.
with
true, then
is false [double denial]
In the first equivalence it follows that
is true [identity law]
Then it can be concluded that 
Answer:
Jamal has 2.5 feet of yarn
Step-by-step explanation:
The increase percentage is 50 percent because the new value is greater than the old value.
D. 1010.37 km ! blah blah blah blah b