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Maths Puzzle
Numerical Ability
Curly can do a job in 30 min, Larry can do it in 40 min, and Moe can do it in 60 min. How long will it take them if they work together?
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book Other Question
some friends are taking a long trip. They are traveling east on route 66 from Flagstaff, AZ though new mexico and texas into oklahoma.
*Let f be the funtion that gives the number
Please, I need help with these problems. I confused on how to get started on it,
a)3y^2-4y-4
b)2x^2+12x-7=-2
c)[(x/3+4)]^2=27
marie