The graph shows a distribution of data.
What is the standard deviation of the data?
a 0.5
b 1.5
c 2.0
d 2.5

Can someone me out here number 4 plz

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.

What is the ordered pair of m’ after point m (5, 6) is rotated 90° counterclockwise?