Unit 10 Exam

An air freshener starts with 30 grams of fluid, and the amount of fluid decreases by 12% per day. Express the amount of grams of freshener, Q, that remains, t, days after it has begun being used.

Check the BEST answer: (HINT: that means simplify what is in the parenthesis)

• Q=30(1+12)^t

• Q=30(1-12)^t

• Q=30(0.88)^t

• Q=12(1.30)^t

P = 8(1.23)^t

What is the initial quantity?

Tags

CCSS.HSF-IF.C.8B

P = 8(1.23)^t

What is the growth rate?

Write as a percent!

Tags

CCSS.HSF-IF.C.8B

P = 8(1.23)^t

Is the function growth or decay?

Check the box:

• Growth

• Decay

Tags

CCSS.HSF-IF.C.8B

Q = 3.1(0.78)^t

Is the function growth or decay?

Check the box:

• Growth

• Decay

Tags

CCSS.HSF-IF.C.8B

You buy a car for $8000 that depreciates at a rate of 11% a year. How much is the car worth after 5 years?

Round to the nearest cent. (two decimal places)

Tags

CCSS.HSF.BF.A.2

What is the formula for exponential growth?

Tags

CCSS.HSF-IF.C.8B

• Vertical stretch by 2

• Vertical shrink by 1/2

• Reflection across the y-axis

• Reflection across the x-axis

What is the equation of the asymptote?

• x = -3
• x=5
• y= -3
• y=5

Tags

CCSS.HSF-IF.C.7E

Describe the graph of f(x) = log x changed to

f(x) = 3log(x + 1) - 5

• vertical stretch by 3 and shift right 1 and 5 units down

• vertical stretch by 3 and shift left 1 and 5 units down

• vertical compress by 3 and shift right 1 and 5 units down

• vertical compress by 3 and shift left 1 and 5 units down