Crystal is organizing the seating arrangements for a concert in her local park. the first row's seats are modeled by the function f(x) = 12. to give everyone a good view, each row must have three more seats than the row before it. the number of additional seats a row has is modeled by the function s(x) = 3(x - 1).

explain to crystal how to create an equation to predict the number of seats in any row. describe how to determine the number of seats in the thirtieth row. use complete sentences.

In a sample of 2023 u.s. adults, 373 said franklin roosevelt was the best president since world war ii. two u.s. adults are selected at random from the population of all u.s. adults without replacement. assuming the sample is representative of all u.s. adults, complete parts (a) through (d). (a) find the probability that both adults say franklin roosevelt was the best president since world war ii. the probability that both adults say franklin roosevelt was the best president since world war ii is (round to three decimal places as needed.) (b) find the probability that neither adult says franklin roosevelt was the best president since world war ii. the probability that neither adult says franklin roosevelt was the best president since world war ii is (round to three decimal places as needed.) (c) find the probability that at least one of the two adults says franklin roosevelt was the best president since world war ii. the probability that at least one of the two adults says franklin roosevelt was the best president since world war ii is (round to three decimal places as needed.) (d) which of the events can be considered unusual? explain. select all that apply. the event in part left parenthesis a right parenthesis is unusual because its probability is less than or equal to 0.05. the event in part (b) is unusual because its probability is less than or equal to 0.05. none of these events are unusual. the event in part (c) is unusual because its probability is less than or equal to 0.05.

Find the solution(s) to the system of equations. select all that apply y=x^2-1 y=2x-2

Two numbers have a sum of -19. one number is x. what expression represents the other number?