Hall rental fees.
C = 2n + 20
People Cost
1 $22
2 $24
3 $26
4 $28
What kind of sequence is illustrated in this table?
an arithmetic sequence, aka a linear sequence
The manager tells Monica that during the last 40 days, the hall has been rented 40 times. The number of guests for those 40 rentals can be arranged to form the following sequence:
11,12,13, ..., 49,50
What is the total amount of money collected by the hall manager for those 40 days?
2006-07-21 05:54:17 · 3 answers · asked by zoso_arivolk 1 in Science & Mathematics ➔ Mathematics
--- [2(11) + 20] + [2(12) + 20] + ... + [2(50) +20]
--- [2(11) + 2(12) + ... + 2(50)] + [20+20+....+20]
--- [2(11+12+...+50)] + 20*40
--- 2[(50+11)+(49+12)+(48+13)+...+(31+30)] + 800
--- 2[61+61+61+61+61+...+61]+800
--- 2[61*20]+800
--- 2[1220]+800
--- 2440+800 = 3240
2006-07-21 06:32:07 · answer #1 · answered by Kyrix 6 · 0⤊ 0⤋
Answer 1 almost had it. But it's $2 per person, so it's
$20*40 + $2*(11+50)*40/2 = $3240.
2006-07-21 06:19:48 · answer #2 · answered by kirchwey 7 · 0⤊ 0⤋
sure, the two sequences are. The definition is: "An arithmetic series is a series wherein each and every and each term differs from the previous one via a similar fixed extensive form." interior the 1st case, the fixed extensive form is -5. interior the 2d case, the extensive form is 3.
2016-12-10 11:41:49 · answer #3 · answered by ? 4 · 0⤊ 0⤋