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numb2000
30.06.2019 •
Mathematics
I'll mark ! in an auditorium, there are 22 seats in the first row and 28 seats in the second row. the number of seats in a row continues to increase by 6 with each additional row. (a) write an explicit rule to model the sequence formed by the number of seats in each row. show your work. use the formula an=a1+(n-1)(d) . (b) use the rule to determine how many seats are in row 12. rhonda started a business. her business made $30,000 in profits the first year. her annual profits have increased by an average of 5% each year since then. (a) write an explicit rule to model the sequence formed by the profits of rhonda’s business each year. use the formula an=a1(r)n-1 . (hint: increase means to add 1 to your %) (b) use the rule to determine what the annual profits of rhonda’s business can be predicted to be 15 years from the start of her business. round your answer to the nearest dollar. do not round until the end. show your work. 3. the sequence 6, 18, 54, 162, … shows the number of pushups kendall did each week, starting with her first week of exercising. (a) what is common ratio in this sequence? (b) how many pushups will kendall do on the 20th week?
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Ответ:
it's 100
step-by-step explanation:
22, 28, 34, 40, 46
b) f(n) = 6n + 16
n = what is the number of the row ( 22 would be row 1) so if we replaced n with 1, we would get 22
c) the 14th row will have 100 seats
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14)
22 | 28 | 34 | 40 | 46 | 52 | 58 | 64 | 70 | 76 | 82 | 88 | 94 | 100
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Ответ:
22, 28, 34, 40, 46
b) f(n) = 6n + 16
n = what is the number of the row ( 22 would be row 1) so if we replaced n with 1, we would get 22
c) the 14th row will have 100 seats
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14)
22 | 28 | 34 | 40 | 46 | 52 | 58 | 64 | 70 | 76 | 82 | 88 | 94 | 100
Ответ:
Ya I do
Step-by-step explanation:
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