The table below shows selected values for the quadratic f(x), which has a turning point at (1,-45). The function f(x) has one zero at x=4 as shown in the table. At what other x-value does it have a zero? Explain your thinking.

Astudent survey asked: "how tall are you (in inches)? " here's the data: 67, 72, 73, 60, 65, 86, 72, 69, 74 give the five number summary. a. median: 73, mean: 70.89, iqr: 5, min: 60, max: 74 b. 60, 66, 72, 73.5, 86 c. 60, 67, 72, 73, 74 d. 0, 60, 70, 89, 74, 100

What is the interquartile range of this data set? 2, 5, 9, 11, 18, 30, 42, 48, 55, 73, 81

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)