A classroom can accommodate less than 24 students. Which of the following inequalities represents the number of students the classroom can
accommodate?
A.
O
19
30 31
20
21
22
23
24
25 26 27 28 29
B.
O
29
30
31
28
24
25
23
26
27
19 20 21 22
O
C.
25 26
27
28 29 30 31
24
22
23
21
19
20
O
D.
28
25
27
29 30 31
28
19 20 21 22 23 24

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?

Adecibel is a logarithmic unit that can be used to measure the intensity of a sound. the function y = 10logx gives the intensity of a sound in decibels, where x is the ratio of the intensity of the sound to a reference intensity. the reference intensity is generally set at the threshold of hearing. use the graphing utility to graph the decibel function.a whisper has a sound intensity of 30 decibels. use your graph to you complete the following statement. the sound intensity of a whisper is times the reference intensity.

Write as a product of two polynomials. 2(3–b)+5(b–3)^2