In 2009, two tickets to a Certain American band’s concert and two tickets to a certain British band’s concert cost, on average, a total of $556. At those prices, four tickets to see this American band and two tickets to see this British band cost $798. What was the average cost of these American and British band tickets in 2009?

pay attention in your classes and concentrate the best thing you can do to raise your test scores is to pay attention when you're supposed to be learning the material: in class!

take good notes.

do your homework.

use mnemonics and other tricks.

do practice tests.

note: the best i know.

the terms of a geometric sequence can be found by beginning with the first term and multiplying by the common ratio repeatedly. a recursive formula for a geometric sequence with common ratio r is given by an=ran−1 a n = r a n − 1 for n≥2 n ≥ 2 .

step-by-step explanation:

simple 80 pieces in 1 sercing so 80*47=3760+20=3780