Question

High Tech Electronics advertises a weekly installment plan for the purchase of a popular brand of big screen TV. The buyer pays $5 at the end of the first week, $5.50 at the end of the second week, $6.05 at the end of the third week, and so on for one year.

a. What will the payments be at the end of the 20th week? Show your work.

b. Find the total cost of the TV. Show your work.

Answer 1

no sorry, use geometric progression

Answer 2

take q=1.1

Answer 3

b1=5 b2=5 b3=6.05

Answer 4

you need to find b20

Answer 5

\[bn=b1*q ^{n-1}\]

Answer 6

where n stands for number of the week

Answer 7

one year has approx 52 weeks, so find the sum of all numbers starting from b1 to b52

Answer 8

see geometric progression