#3 Algebra 2 - Spring Final Review

100 bacteria are doubling in a petri dish daily. Which function models this situation?

• f(x) = 100(2x)

3500 bacteria are triple in a petri dish daily. Which function models this situation?

• f(x) = 3500(3x)

• f(x) = 3(3500)x

If there were only 50 bacteria to begin but they were tripling every day, how many bacteria would be present on day 7?

• 109,350

• 1,050

• 2,343,750,000,000

• 36,450

If there were only 150 bacteria to begin but they were doubling every day, how many bacteria would be present on day 5?

• 1,500

• 4,850

• 1.5 × 10¹¹

• 3,750

The resale value of a $1,000 TV decreases by 15% every year. Which function models this situation?

• f(x) = 1000(0.85)x

The resale value of a $3,000 TV decreases by 10% every year. Which function models this situation?

• f(x) = 3000(0.90)x

If the TV was $1,500 to begin with and its resell value was decreasing by 20% per year, how much would it resell for in 3 years?

• $960

• $614.40

• $12

• $768

If the TV was $2,500 to begin with and its resell value was decreasing by 15% per year, how much would it resell for in 2 years?

• $750

• $56.25

• $694.75

• $1,806.2

Convert 4π/3 radians to degrees.

• 240°

• 60°

• 30°

• 120°

Convert (3π/2) radians to degrees.

• 270°

• 90°

• 180°

• 30°