exam Maths Puzzle Numerical Ability

True or False: (1,2,3) has 8 subsets.

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exam Other Question

Ariana took 2h longer to drive 360mi on the first day of a trip than she took to drive 270mi on the second day. If her speed was the same on both days, what was the driving time each day?

Thank you for helping me understand these problems:-) what are the steps to graphing 3y squared - x squared = 25?