The
what is
entered at the point (-3, 4) and has a radius of length 3.
o a. (x-4)2 + (x+3)2 =
1 32
o b. (x+4)2 + (x-3)2 =
32
o c. (x+3)2 + (7-4)2 = 9
o d. (x-3)2 + (y + 4)2 = 9

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?