5/9 is the answer because you add 3/4+2/5
Part a would be 8x7 = 56 and 60-56= 4 so she would need to sell 4 more games
Part b I’m not sure about. One person would have to but 4 video games I guess
904.78cm there is only one variable which is the radius since the radius is 6 cm just plug it into the formula and it will give u 904.78cm