Review Exponential Functions

How will the graph of y = 3^x translate when the function is changed to y = (3)^x-1+4?

• Shifted right 1 and up 4

• Shifted left 1 and down 4

• Shifted left 1 and up 4

• Shifted left 4 and up 1

• Shifted right 4 and up 1

What function is represented by the sequence below? 7, 28, 112, 448 ...

• a_n = 4(7)^n-1

• a_n = 7(4)ⁿ

• a_n = 7(2)^n-1

• a_n = 7(4)^n-1

A guitar that costs $1,600 loses 7% of its value every year. What equation would model the value of the guitar, v, after t years?

• v = 1600(1.07)^t

• t = 1600(.93)^v

• v = 1600(.93)^t

• t = 1600(1.07)^v

The number of subscribers to Francisco's podcast after m months can be modeled by the function y = 150(1.09)^m. What is the growth rate of Francisco's listeners?

• 1.09

• 109%

• 90%

• 9%

The number of subscribers to Francisco's podcast after m months can be modeled by the function y = 150(1.09)^m. How many listeners would Francisco have after one year? (You can't have part of a subscriber)

• 163

• 421.9

• 421

• 163.5

There were 417 cell phones sold at an electronics store in January. Since then, cell phone sales at this store have increased at a rate of 3.75% per month. At this rate of growth, which function can be used to determine the monthly cell phone sales x months after January?

• f(x) = 417(3.75)^x

• f(x) = 417(0.0375)^x

• f(x) = 417(1.0375)^x

• f(x) = 417(1.375)^x

Q1. What is the total cost?

• A) $1888

• B) $1931

• C) $1671

• D) $1654

•  y=1500(1-0.015)^t
• y=1500(0.015)^t
•  y=1500(1+0.015)^t
• y=1500(1.5)^t

What is the domain of the exponential function represented by the graph above?

• x∈ℝ

• x > -4

• x > -2

• x=-4

Is the pictured graph growth, decay, or linear or none?

• Exponential Growth

• Exponential Decay

• Linear

• None