U9 A1 Test Review

What is the range of this function?

• All positive real numbers

• All negative real numbers

• All real numbers less than 4

• All real numbers greater than 4

What are the domain and range of the function?

• 52% per hour

• 48% per hour

• 47% per hour

• 53% per hour

• There were originally 129 ducks

• There were originally 86 ducks

• The number of ducks increased by 43 each year.

• The number of ducks increases by a factor of 50 each year

• The number of ducks increases by a factor of 1.5 each year

A Softball tournament starts with 384 teams. After each round, half of the teams are eliminated. How many teams remain after 7 rounds?

The number of bacteria in a Petri dish increases by 24% every hour. If there were initially 300 bacteria placed in the Petri dish, which function can be used to determine the number of bacteria in the Petri dish in exactly x hours?

The number of research papers in Professor Sycamore area of expertise has been increasing by 5% every year. Given that 30,010 research papers were published this year. Assuming the trend continues, which equation projects the amount of research papers published in x years?

• y = 30,010 (.05)^x

• y = 30,010 (1.05)^x

• y = 30,010 (.95)^x

• y = 30,010 (5)^x

Due to its weakening steel industry, Canalave Town has been experiencing a population decline of 10% every year. The current population is 74,000 people. Assuming the trend continues, which equation projects the population in x years?

• y = 74,000 (0.10)^x

• y = 74,000 (0.90)^x

• y = 74,000 (1.10)^x

• y = 74,000 (1.90)^x

A sailboat that costs $5,950 decreases in value by 11% per year. Which function can tell you how much it will cost in X years?

What is the equation that best represents the graph?