Ineed graphing, finding the slope, and linear equation

What is the interquartile range (iqr) of the data set represented by this box plot?

The measures of the angles in △abc are given by the expressions in the table. angle measure angle a 65° angle b (3x−10)° angle c (2x)∘ find the value of x. then find the m∠b and m∠c.

How can you use synthetic substitution to tell whether a given binomial is a factor of a polynomial?