After a 20% increase the new price of radio is $78.00. what was the original price of the radio

Aregression was run to determine if there is a relationship between hours of tv watched per day (x) and number of situps a person can do (y). the results of the regression were: y=ax+b a=-0.662 b=30.418 r2=0.703921 r=-0.839

Determine whether the samples are independent or dependent. upper a data set includes the morning and evening temperature for the lasta data set includes the morning and evening temperature for the last 90 days.90 days.

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)