43. challenge a motorized scooter has tires with a radius of 3 1/2 inches.
the tires make one revolution every 1/10 second. find the speed of the
scooter in miles per hour. round to the nearest tenth. (hint: the speed of
an object spinning in a circle is equal to the circumference divided by the
time it takes to complete one revolution)

Aprobability experiment is conducted in which the sample space of the experiment is s={7,8,9,10,11,12,13,14,15,16,17,18}, event f={7,8,9,10,11,12}, and event g={11,12,13,14}. assume that each outcome is equally likely. list the outcomes in f or g. find p(f or g) by counting the number of outcomes in f or g. determine p(f or g) using the general addition rule.