exam Maths Puzzle Numerical Ability

SAT scores have a mean of 1026 and a standard deviation of 209. ACT scores have a mean of 20.8 and a standard deviation of 4.8. A student takes both test and scores 1130 on the SAT and 25 on the ACT. Compare the scores.

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find the ratio of Rs5 to Rs45 Given f(x) = -xTO THE POWER OF 3 - 3x TO THE POWER OF 2 - x + 5, find f(-2), f(0), and f(2)


Given f(x) = xTO THE POWER OF 2 - x + 2, find f(0).