Midterm Review #2

The equation A = 1300(1.02)⁷ is being used to calculate the amount of money in a savings account.  What does 1.02 represent in this equation? 

• 0.02% decay
• 2% decay
• 0.02% growth 
• 2% growth

Tags

CCSS.HSF-IF.C.8B

Janet buys a painting by Pablo Leonardo, a famous artist for $30,000 at an art auction in Paris. She estimates that the painting will increase in value (v) by 7% each year. Which function models the value of the painting in 5 years? 

• v = 30,000(1 + 7)⁵
• v = 30,000(1 + 0.7)⁵
• v = 30,000(1 + 0.07)⁵     
• v = 30,000(1 – 0.07)⁵

Tags

CCSS.HSF.BF.A.2

 Which of the following equations could not be used to find a term in the sequence below? 
12, 6, 3, (3/2)...

• A_n = 12(0.5)^n-1
• A_n = 24(0.5)ⁿ
• A_n = A_{n -1} x 0.5    
• A_n =(1/2)(12)^n-1

Tags

CCSS.HSF.BF.A.2

Which of the following exponential function goes through the points (1, 2) and  (4, 250)?

• y = 0.5(4)^x
• y = 0.4(5)^x
• y = 0.04(50)^x       
• y = 5(0.4)^x  

Tags

CCSS.HSF.LE.A.2

The population of Winnemucca, Nevada, can be modeled by P = 6,191(1.04)^t, where t is the number of years since 1990.  What is the y – intercept of this equation and what does it represent? 

• 4, the initial percent of the population.
• 4, the percent of the population after t years.
• 6,191, the population after t years. 
• 6,191, the initial population. 

Tags

CCSS.HSF.LE.B.5

The equation A = 23,000(0.85)¹⁰ is being used to calculate the value of a car 10 years after being purchased. What does the 0.85 represent? 

• 85% growth
• 15% growth
• 85% decay 
• 15% decay

Tags

CCSS.HSF-IF.C.8B

Jack bought a house for $700,000. Over the last five years the value of homes in his neighborhood have increased by 10% each year. Which function models this? 

• v = (7 x 10⁵)(1 + (0.01)⁵ 
• v = (7 x 10⁵)(1 + 0.1)⁵
• v = (7 x 10⁶)(1 + 0.01)⁵
• v = (7 x 10⁶)(1 + 0.1)⁵

Tags

CCSS.HSF-BF.A.1A

Which of the following equations could not be used to find a term in the sequence below? 
40, 10, (10/4), (10/16)...

• A_n = 40(0.25)^n-1
• A_n = 0.25(40)^n-1
• A_n = A_{n -1} x 0.25 
• A_n = 160(0.25)ⁿ

Tags

CCSS.HSF.BF.A.2

Which of the following exponential function goes through the points (2, 48) and  (6, 768)?

• y = 48(2)^x
• y = 16(4)^x
• y = 12(2)^x
• y = 2(12)^x  

Tags

CCSS.HSF.LE.A.2

The equation y = 130(0.89)^x represents the amount of coffee in your system after you drink a full cup. What is the y intercept and what does it represent? 

• 130, the amount of caffeine in your system after x hours. 
• 130, the initial amount of caffeine in the coffee. 
• 0.89, the initial percent of caffeine in the coffee.
• 0.89, the percent of caffeine in your system over time.

Tags

CCSS.HSF.LE.B.5