Free Printable Unit 5 Quiz #1 Review

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Unit 5 Quiz #1 Review

Total questions: 12

Worksheet time: 48mins

Name

Class

Date

Fido did not have fleas when his owners took him to the kennel. The number of fleas on Fido after he returned from the kennel grew according to the equation $f\left(x\right)=8(3)^x$ , where f is the number of fleas and n is the number of weeks since he returned from the kennel. How many fleas did Fido pick up at the kennel?

Kai's brother collects fuzzy insects called tribetts. The tribetts the population is modeled by the equation $y=10,000(0.72)^t$ , where $x$ represents the months. Which of the following statements are true?

The size of the population appreciates by 72% each month.

The size of the population depreciates by 28% each month.

The size of the population will be 7200 after 1 month.

The population began with 10000.72 tribetts.

Suppose you deposit $1,000 in a savings account that earns interest of 6% per year on the current balance in the account. Which is the correct equation to model this situation?

y = 1000(1 + .06)^t

y = 1000(1 - .06)^t

y = 1000(1 + 6)^t

y = 1000(1 - 6)^t

A $10,500 investment has a 15% gain each year. Determine the value of the investment after 4 years.
y = a(1 + r)^t or y = a(1 + r)^t

$18,364.57

$5,481.07

$531,562,500

$2,125,928.03

Solve for x:
(-3)^x = (-3)¹³

-3

x + 13

x -13

Solve 8 = 2^5x+7

x = ⅘

x = ¼

x = -⅘

x = -¼

To solve 8 = 2^5x+7, you would need to re-write 8 as what base?

Cannot be determined

Solve: 2^x = 4^x+1

x = -2

x = 2

x = -3

x = 3

Rodney's current savings account can be represented by the expression 9^8-x . His brother's savings account can be represented by the expression 27^x-3. Their accounts are compounding yearly. After how many years will their accounts have the same amount of money?

$5$ years

$-5$ years

$\frac{1}{5}$ years

$-\frac{1}{5}$ years

10.

Solve for x:
9^x+8= 81

-6

11.

Sovle for x:
5^{-3x - 1} = 25

x = -1

x = -4

x = -3

x = 1

12.

The original value of a painting and its value each year can be represented by the equation $y=1400(1.09)^x$ . Which of the following statements are true?

The original value of the painting is $1401.09.

The painting's value is appreciating yearly by 9%.

The painting's value is depreciating yearly by 109%.

After 1 year the painting has a value of $1400.

100 %

Unit 5 Quiz #1 Review

Total questions: 12

Worksheet time: 48mins

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