The gym offers a discount when more than one member of the family joins. the first member ( n=10) pays $550 per year. the second member to join (n=1) get discount of $75 per yar. the third member (n=2) gets an additional $75. the price for the nth member is given by 550+(-75n)
a. what is the price for the fourth member to join (n=3)
b. for a large family, is it possible for a member to would join free? if so, which member would it be? explain you reasoning
c. other than $0, what is the lowest amount that member would pay to join? which member would it be? explain your reasoning

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.

Using the side-splitter theorem, daniel wrote a proportion for the segment formed by luke segment de. what is ec?

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