It’s the 3rd option. It would be that bc you are checking by rounding your number up.
Answer:
try this website called math way
Step-by-step explanation:
it should help it answers questions if you take a picture too! :)
He began with 10. Because if he bought 8 after selling half of his books and now his total is 13, then 13-8=5
so 5+5=10
A line perpendicular to that straight line passing through that point