It's a cubic with a positive x^3 coefficient. The general shape is "/".
It goes to -∞ for large negative x.
It goes to +∞ for large positive x.
It goes to -∞ for large negative x.
It goes to +∞ for large positive x.
Carole's age is five times Joe's age. The sum of their ages is 18. How old are Carole and Joe?
2 answers:
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If a line's slope is 
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