The graph shows the distribution of the number of text messages young adults send per day. The distribution
is approximately Normal, with a mean of 128
messages and a standard deviation of 30 messages.
What percentage of young adults send between 68
and 158 text messages per day?
0 34%
47.5%
Daily Text Messaging
81.5%
0 95%
8
38
68
1188
218
248
98 128 158

Hey, can you post the problem?

Answer d; a supplementary angle = 180°, so if that angle = 150°, y would = 30°.

The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.