30 POINTS PLEASE HELP LOOK AT THE PICTURES ITS EASY IM JUST DUMB Which stem-and-leaf plot represents the data sets shown?

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?

Ametal rod needs to be 9 feet and 5.5 inches in length. the sections of the poles being used are each 1 foot and 10.5 inches long. how many 1ft 10.5in sections would be needed to complete the 9ft 5.5in metal rod? and how many inches of material will be left?

How to find the exponential function y=ca^x, with points (1,2) and (2,1)