Exponetial Functions Test Review

What is the equation of the horizontal asymptote of the graph of the function y = 8(0.88)^x

• x = 16

• x = 0

• y = 1

• y = 0

Tags

CCSS.HSF-IF.C.7E

The population of a town is modeled by an exponential function. The initial population is 55,000 people. After the first year, the population of the town is 59,500 people. If the population of the town continues to grow at the same rate each year as the first which function can be used to model the population after x years?

• p(x) = 59,500(1.097)^x

• p(x) = 55,000(1.082)^x

• p(x) = 59,500(0.082)^x

• p(x) = 55,000(0.924)^x

Tags

CCSS.HSF.LE.A.2

Using p(x) = -7.6(3.2)^x what is the domain of the function? (rounded to the nearest tenth)

• -3.2<x<11.4

• 0<x<10.2

• All real numbers

• -∞<x<15.5

Using p(x) = -7.6(3.2)^x what is the range of the function? (rounded to the nearest tenth)

• None

• -10.3 ≤ y ≤ ∞

• All real numbers

• -∞ < y < 0

Using p(x) = 7.6(3.2)^-x discribe the function.

• growth

• decay

Tags

CCSS.HSF-IF.C.8B

Using p(x) = -7.6(3.2)^x what is the intial value of the function?

• 3.2

• 0

• 1

• -7.6

Tags

CCSS.HSF.LE.B.5

A customer purchases an electronic device for $1025. Each year the value of the device decreases by 22%. Which statement about the graph that represents the relationship between the device in dollars, y, and the number of years, x since the device was purchased?

• The y-intercept of the graph is 1025

• The y-intercept of the graph is 799.5

• The graph has a verticle asymptote at x= 0

• The graph has a horizontal asymptote as y = -2

Tags

CCSS.HSF-IF.C.7E

The function z(t) = 432(1.095)^t can be used to estimate the nuber of people named Zane, z, in the USA at the end of t years. What does 1.095 represent in this function?

• A decrease of 1.095% Zane's

• An increase of 1.095% Zane's

• An increase of 9.5% Zane's

• The intial value of Zane's is 1095

Tags

CCSS.HSF.LE.B.5

How prepared am I feeling for this test?

• I am super ready and have the best TA's

• I am sorta ready and will listen to my TA's more

• I'm not ready and have ignored my TA's

• I'm failing and have never listened to my TA's