Question

The finite sequence whose general term is an = 0.17n2 - 1.02n + 6.67 where n = 1, 2, 3, ..., 9 models the total operating costs, in millions of dollars, for a company from 1991 through 1999.

Find (I will post pic)

Answer 1

Answer choices
A. $21.58 million

B. $27.4 million

C. $23.28 million

D. $29.1 million

Answer 2

find

a1, a2, a3, a4, a5

Then add them up

Answer 3

let me know what you get

Answer 4

how do you find a1 a2...

Answer 5

To find a1, plug in n = 1 and evaluate

an = 0.17n^2 - 1.02n + 6.67

a1 = 0.17(1)^2 - 1.02(1) + 6.67

a1 = 0.17(1) - 1.02(1) + 6.67

a1 = 0.17 - 1.02 + 6.67

a1 = 5.82

Answer 6

Do the same thing, but using n = 2, to find a2

Answer 7

for a2 i got 5.31 a3=5.14 a4=5.31 and a5=5.82 if you add a1 to a5 together you get 27.4

Answer 8

so B?

Answer 9

that is 100% correct

Answer 10

nice work

Answer 11

thnx!

Answer 12

np