In the year 1985, during its prime, a popular rock band had 40 million fans attend their summer concert tour. Each year since, their fans steadily decreased. The rock band's manager recorded the summer concert tour attendance every year, as shown in the chart below. Year Summer Concert Tour
Attendance
1985 40 million
1986 36.8 million
1987 33.8 million
1988 31 million
The curve that best fits this exponential decrease in attendance (y) in millions is represented by the following equation.
y=40⋅0.92x
If x represents the number of years since its prime, what was the rock band's tour attendance in 1990? Round your answer to the nearest tenth of a million.
24.2 million
22.8 million
28.7 million
26.4 million