What is the measure of Angle R M N?

Triangle R M N. Side N M extends to form exterior angle to M with angle 117 degrees.

Suppose a least-squares regression line is given by modifyingabove y with caret equals 4.302 x minus 3.293. what is the mean value of the response variable if xequals20?

The last time i bought this product , it cost $20.00 but it looks like it cost 29. 60 today? what is the increase

Janet drove 300 miles in 4.5 hours. write an equation to find the rate at which she was traveling