The number of shoes a group of college students own is approximately Normally distributed with a mean of 22.1 and a standard deviation f 6.3. About what proportion of the students own between 20 and 30 pairs of shoes? Use
a graphing calculator to find the answer
O 0.1049
0.3694
0 0.4744
0.5256
0.8951

Since opening night, attendance at play a has increased steadily, while attendance at play b first rose and then fell. equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. on what day(s) was the attendance the same at both plays? what was the attendance? play a: y = 8x + 191 play b: y = -x^2 + 26x + 126 a. the attendance was never the same at both plays. b. the attendance was the same on day 5. the attendance was 231 at both plays on that day. c. the attendance was the same on day 13. the attendance was 295 at both plays on that day. d. the attendance was the same on days 5 and 13. the attendance at both plays on those days was 231 and 295 respectively.

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.

If 5x - 2 = -12, then x = a) -50 b) -4.4 c) -2.8 d) -2