log & exponential applications

• about 7 years
• about 10 years
• about 18 years
• about 22 years

Tags

CCSS.HSF.LE.A.4

• k = 3.495
• k = 0.582
• k = 20.968
• k = 0.699

Tags

CCSS.HSF.LE.A.4

• 19th year
• 21st year
• 30th year
• 10th year

• 8,202  mowers
• 18,031 mowers
• 18,886  mowers
• 24,234  mowers

• 15 years
• 36.6 years
• 21.2 years
• 28.4 years

An extra-large hot chocolate is poured into a mug. The temperature, in degrees Celsius, of the hot chocolate minutes after it has been poured, can be modeled by the following equation. About how long, to the nearest minute, will it take for the hot chocolate to cool to a temperature of 70?

• 10 minutes

• 12 minutes

• 5 minutes

• 50 minutes

If there are initially 2200 bacteria in a culture, and the number of bacteria triple each hour, the number of bacteria after t hours can be found using the formula y = 2200(3)^t . How long will it take the culture to grow to 60,000 bacteria?

• 1.52 hours

• 3.01 hours

• 4.25 hours

• 5.06 hours

Tags

CCSS.HSF.LE.A.4

Does the following equation model growth or decay?
y = 500(.35)^x + 7

• Growth
• Decay

Tags

CCSS.HSF-IF.C.8B

Does the following represent growth or decay?
y = 1/2(3)^x + 2

• Growth
• Decay

Tags

CCSS.HSF-IF.C.8B

Your shiny new boat cost $7650.  The depreciation for your boat is 14% per year. Estimate the value of your vehicle in 3 years. What is the equation that models this problem?

• y= 7650(.14)³
• y= 7650(.86)³
• y= 7650(1+.86/1)^3*1

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.SSE.A.1

CCSS.HSF.BF.A.1

CCSS.HSF.LE.A.1

CCSS.HSF.LE.A.2