Which function has an inverse that is also a function? y=3|x| -5
y= 1/3x-3/4
y = 3x2
Y=1/3x2 – 5x +3
Can someone help me ?

Solve the equation -9p - 17 =10 a -3 b. 16 c. 18 d -16

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If the alternate hypothesis of an experiment is “the true mean height of the giraffes is more than 15 feet” what is the null hypothesis?