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The physical fitness of an athlete is often measured by how much oxygen the athlete takes in (which is recorded in milliliters per kilogram, ml/kg). the mean maximum oxygen uptake for elite athletes has been found to be 60 with a standard deviation of 7.2. assume that the distribution is approximately normal.

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

If 3x+8=3x+8 is it one solution or no solution