If you want to multiply the two functions, the answer is a.
In fact, you have

Answer:
The value remain unchanged.
Step-by-step explanation:
By Z score, we mean:
Z =
, if we substitute the given values of mean and standard deviation, we obtain the z score value. That is,
Z =
= 85/12 = 7.083333.
NB: We assume that mean and standard deviation are in the same units.
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Answer: 0.4^3
Step-by-step explanation:
you just count how many times you multiply 0.4 and use that number to be the exponents