แผ่นงานRC 5 EOC Algebra 1 Review
คำถามทั้งหมด: 31
What is the y-intercept of the function
y=23(4)x
What is the range of the function
y=55(2.5)x
What is the horizontal asypmtote of the funtion
y=200
y=21
y=0
x=200
Suppose a culture of bacteria begins with 5000 cells and dies by 30% each year. Write an equation that represents this situation.
y = 5000(0.7)t
y = 5000(.3)t
y = 30(50)t
y = 30(5000)t
Write an equation that models the following situation: Initial value of 6 and a growth factor of 14%. (a)
y=6(1.14)x
y=6(0.14)x
y=6(1.86)x
y=6(0.86)x
You buy a new computer for $2100. The computer decreases by 50% annually. Which function represents the situation?
y = 2100(0.5)t
y = 2100(1.5)t
y = 50(1.2100)t
y = 50(.2100)t
You have inherited land that was purchased for $30,000 in 1960. The value of the land increased by approximately 5% per year. Write an equation to represent the situation:
f(x) = 30,000(1.05)t
f(x) = 30,000(.95)t
f(x) = 30,000(1.5)t
f(x) = 30,000(5)t
You invested $400 into an account with 7.5% interest rate compounded yearly. Which equation can be used to calculate how much you will have in x years?
f(x) = 7.5(1.75)x
f(x) = 400(0.925)x
f(x) = 400(1.075)x
f(x) = 400(.75)x
Which of the following functions shows an initial amount of $15 and an increase of 35% each year?
y = 35(.15)t
y = 35(1.15)t
y = 15(.65)t
y = 15(1.35)t
The original value of a painting is $1400, and the value increases by 9% each year. Write an exponential growth function to model this situation. (a)
y=1400(1.09)x
y=1.09(1400)x
y=1.09x
y=1400(0.91)x
You bought a brand new car for $45,000. The car depreciates at approximately 7% per year. How much will the car be worth after 8 years? Round to the nearest whole dollar. (a)
You buy a new computer for $2100. The computer decreases by 50% annually. When will the computer have a value of $600? (a)
The population of Winnemucca, Nevada, can be modeled by P=6191(1.04)t where t is the number of years since 1990. What percent did the population increase each year? (a)
The foundation of your house has about 1,200 termites. The termites grow at a rate of about 2.4% per day. How long until the number of termites doubles? (a)
You have inherited land that was purchased for $30,000 in 1960. The value of the land increased by approximately 5% per year. What is the approximate value of the land in the year 2011?
$361,223
$310,500
$344,000
$280,500
You drink a beverage with 120 mg of caffeine. Each hour, the caffeine in your system decreases by about 12%. How long until you have 10mg of caffeine? (a)
Every year the population drops by 4.5%. What is the population after 3 years?
The number of mosquitoes at the beginning of the summer was 4,000. The population of mosquitoes is expected to grow at a rate of 25% a month. How many mosquitoes will there be after 4 months?
9765
9006
5433
9766
You have inherited land that was purchased for $25,000 in 1970. The value of the land has appreciated by approximately 4% per year. What was the value of the land in the year 2000? Round to the nearest whole dollar.
$750,000
$605,035,808
$81,084
$7,346
What is the value of b for the function
y=23(4)x
What is the domain of the function
y=55(2.5)x
y>55
y>2.5
y>0
y<0
all real numbers
Which of the following is an exponential function?
y = x2
f(x) = 3x3
y = x3
f(x) = 3x
What is the initial value in y=4(2)x
4
2
x
What is the y-intercept in y=4(2)x
(4,0)
(0,2)
x
(0,4)
(4,2)
What is the starting amount in the problem below?
f(t) = 300(1.05)t
300
1.05
t
y
What is the growth rate in the problem below?
f(t) = 300(1.05)t
300
1.05
t
y
If the function is DECAYING at a rate of 4.1%, the b value is (a) .
If the functions is growing at a rate of 2.7%, the b value is (a) .
Select the functions that are exponential growth.
y=−2(3)x
f(x)=3(1.09)x
f(x)=4(31)x
y=0.5(23)x
แป้นคำตอบRC 5 EOC Algebra 1 Review
คำถามทั้งหมด: 31
23
y>0
y=0
y = 5000(0.7)t
y=6(1.14)x
y = 2100(0.5)t
f(x) = 30,000(1.05)t
f(x) = 400(1.075)x
y = 15(1.35)t
y=1400(1.09)x
$361,223
9766
$81,084
4
all real numbers
f(x) = 3x
4
(0,4)
300
1.05
y=0.5(23)x
, a)y=−2(3)x
, b)f(x)=3(1.09)x