Unit 7 Review - Exponential & Logarithmic

Solve: 1.4 + 8.2x = 4^x (make sure you zoom out!)

• -0.058

• -0.058, 2.114

• 0

• 1

What is the y-intercept of the function?

• 2
• 3
• 1
• -2

Tags

CCSS.HSF-IF.C.7E

What type of function is $f\left(x\right)=2\left(\frac{1}{7}\right)^x$  ?

• Exponential Growth

• Linear

• Exponential Decay

• None of the Abovee

In an exponential function, what does the 'a' represent? 

• SLOPE
• RATE OF CHANGE
• INITIAL AMOUNT
• GROWTH OR DECAY FACTOR

Tags

CCSS.HSF-IF.C.8B

According to the graph, what is the value of y as x approaches negative infinitely?

• y = 0

• y = -3

• x = 0

• x = -3

What is the initial value of the situation represented by f(x)=0.05(2)^x?

• 0.05

• 2

• 0.1

• 1

Tags

CCSS.HSF.LE.B.5

According to the graph, which of the following is the closest rate of decrease?

• 80%

• 31%

• 25%

• 12%

A student invests $500 for x years in a savings account that earns 4% interest per year. No further deposits or withdrawals are made during this time. Write an function f(x) to represent the amount of money earned after x years.

• f(x) = 500 (.60)^x

• f(x) = 500 (.96)^x

• f(x) = 500 (1.04)^x

• f(x) = 500 (1.4)^x

Tags

CCSS.HSF.BF.A.1

CCSS.HSF.IF.A.1

CCSS.HSF.IF.A.2

CCSS.HSF.LE.A.1

CCSS.HSF.LE.A.2

A stock originally valued at $32 is decreasing in value at 1.25% per month. How much is it worth in 7 months?

• $23.25

• $29.30

• $34.90

• $31.40

Tags

CCSS.HSF.BF.A.2

The function V(t) =1350(1.017)^t represents the value V(t), in dollars, of a comic book t years after its purchase. The yearly rate of appreciation of the comic book is

• 17%
• 1.7%
• 1.017%
• 0.017%

Tags

CCSS.HSF-IF.C.8B