Help pls thanks
Is it

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Which of the following is a function? a.) {(-2, -4/5), (-1,-,,-1)} b.) {(-2,,1/,3/,1)} c.) {(-22)} d.) {(-21)}

What is the solution for 6 - 7/8? explain the steps.

Use a standard normal table to determine the probability. give your answer as a decimal to four decimal places. −1.5< < 1.5)