Can someone me? for the (select) ones, the answers are: 1st one: on call; talk time2nd: divide; multiply 3rd: is not, is

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

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?

Select the margin of error that corresponds to the sample mean that corresponds to each population: a population mean of 25, a standard deviation of 2.5, and margin of error of 5%