Question: A new species of fish is released into a lake. If 𝑃(𝑡)=7𝑏𝑡P(t)=7b t , how many fish were released initially?
Answer Choices: A. 7
B. 12
C. 14
D. 2
Answer: A. 7
Question: If Mrs. Mitchell wrote a function to describe the situation, what would change when she increases points per correct part from 5 to 7?
Answer Choices: A. The function would remain the same B. The y-intercept C. The slope D. Both the slope and y-intercept
Answer: C. The slope
Question: What is the domain of the exponential function 𝑦=(0.5)𝑥y=(0.5) x ?
Answer Choices: A. 𝑥>1x>1
B. 𝑥<1x<1
C. All real numbers
D. 𝑥≥1x≥1
Answer: C. All real numbers
Question: What is the effect on the graph of the parent function 𝑓(𝑥)=𝑥f(x)=x when 𝑓(𝑥)f(x) is changed to 𝑥+6x+6?
Answer Choices: A. Same slope, same y-intercept B. Different slope, different y-intercept C. Different slope, same y-intercept D. Same slope, different y-intercept
Answer: D. Same slope, different y-intercept
Question: Write an equation to model this situation: “Sam is 4 times as old as Allie.”
Answer Choices: A.𝑆=4+𝐴S=4+A
B. 𝐴=4+𝑆A=4+S
C. 𝑆=4𝐴S=4A
D. 𝐴=4𝑆A=4S
Answer: C. 𝑆=4𝐴S=4A
Question: A new car worth $20,000 loses 20% of its value every year. Is the value represented by a linear or exponential function?
Answer Choices: A. Both linear and exponential B. Exponential C. Linear D. Neither linear or exponential
Answer: B. Exponential
Question: What is the effect on the graph of the function 𝑓(𝑥)=2𝑥f(x)=2 x when replaced with 𝑓(𝑥+5)f(x+5)?
Answer Choices: A. Translate vertically 5 units up B. Translate horizontally 5 units right C. Translate vertically 5 units down D. Translate horizontally 5 units left
Answer: D. Translate horizontally 5 units left
Question: What should Chris change in the function to reach his $300 goal in 4 more months?
Answer Choices: A. Change the amount he adds each month to $40 B. Change the y-intercept of the linear function to $50 C. Change the amount he adds each month to $50 D. Change the y-intercept of the linear function to $20
Answer: C. Change the amount he adds each month to $50
Question: Which set is a function?
Answer Choices: A. {(0, 3), (3, 0), (0, 4), (4, 0)}
B. {(6, 2), (2, 0), (4, 6), (6, 4)}
C. {(2, 6), (3, 6), (4, 6), (2, 0)}
D. {(0, 2), (2, 0), (4, 6), (6, 4)}
Answer: D. {(0, 2), (2, 0), (4, 6), (6, 4)}
Question: Which situation is represented by the equation 8𝑥+60=4𝑥+100 8x+60=4x+100?
Answer Choices: A. Jason has $60 and Matt has $100. Jason saves $8/week, Matt saves $4/week – when will Jason have more?
B. Jason has $60 and Matt has $100. Jason saves $4/week, Matt saves $8/week – when will they have the same?
C. Jason has $60 and Matt has $100. Jason saves $8/week, Matt saves $4/week – when will they have the same?
D. Jason has $60 and Matt has $100. Jason saves $4/week, Matt saves $8/week – when will Jason have more?
Answer: C. Jason has $60 and Matt has $100. Jason saves $8 per week and Matt saves $4 per week. What is x, the number of weeks it will take for Jason and Matt to have the same amount of money?