Jefferson High School has an enrollment of 1,864 students. In May, 564 students will
graduate. How many students will be enrolled
after graduation?
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Acertain standardized? test's math scores have a? bell-shaped distribution with a mean of 520 and a standard deviation of 105. complete parts? (a) through? (c)

Abaker makes 186 cookies. some are chocolate chip and some are oatmeal raisin, and both kinds are made with and without nuts, as shown in the table above. because they are more popular, the baker made 2/3 of the cookies chocolate chip. if a chocolate chip cookie is chosen at random, what is the probability that it will have nuts? a) 21/93 b) 21/62 c) 41/93 d) 21/41

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?