Exponential function.
Compound interest
Half life
Statistics
Geometric sequence
100
1.Which does y= 2(0.5)^x represent?
A. Exponential Growth
B. Exponential Decay
The correct answer is B. Exponential decay.
100
1. what is monthly mean compound interest.
A. 52 a year B. 365 a year
C. 12 a year B. 4 a year
The correct answer is C. 12 a year.
100
1. The rate at which a radioactive element decays is its ____.
A. quarter life
B. whole life
C. wonderful life
D. half life
The correct answer is D. half life.
100
1.What does "mode" mean?
A. average B. middle
C. repeats the most C. variation
The correct answer is C. repeats the most.
100
1. What does r represent in y=a(1-r)^t
A.Radical C. Common difference
B.Common ratio D. time
The correct answer is B. common ratio.
200
2.What is the initial/starting value value of the situation represented by f(x)=0.05(2)x?
A. 0.05 B. 2
C. 0.1 D.1
The correct answer is A. 0.05.
200
2. change 7.36% to a decimal.
A. 736 C.0.0736
C. 0.736 D. 73.6
The correct answer is C. 0.0736.
200
2. What is Half-life?
A. The amount of time it takes for some of the nuclei in a sample of the isotope to decay.
B. The amount of time it takes for half the electrons in a sample of the isotope to decay.
C. The amount of time it takes for half the nuclei in a sample of the isotope to decay.
D. the amount of time it takes to double the nuclei in a sample of the isotope to decay.
The correct answer is C. The amount of time it takes for half the nuclei in a sample of the isotope to decay.
200
2. What if you have two numbers for the median?
A. use both for median.
B. add the two numbers, then divide them by 2 to find the true median.
The correct answer is B.add the two numbers, then divide them by 2 to find the true median.
300
3. What does this graph represent?
A. Exponential Growth
B. Exponential Decay
The correct answer is B. Exponential decay.
300
3. Which of the following exponential equations is the formula for compound interest?
A. y=a(b)^X B. Y=A(1-r)^t
C. y=p(1+r/n)^tn D. y=a(1+r)^t
The correct answer is C. y=p(1+r/n)^tn.
300
3. You have 100 grams of radioactive C-14. The half life of C-14 is 5730 years. How many grams are left after 1 half life?
A. 100 g B. 25 g
C. 2 g D. 50 g
The correct answer is D. 50 Grams.
300
3. a date sat can have more than 1 range.
A. True B. False
The correct answer is B. False.
300
3. Find the common ratio: 4, -16, 64, -256, ...
A. r = -4 B. r = 2
C. r = -2 D. r = 4
The correct answer is A. r=-4.
400
4. What type of function is y = 7(5/4)x?
A. Exponential Growth B. Exponential Decay
C. Linear D. None of the above
The correct answer is A. exponential growth.
400
4. My friend earned $200 from worked week ago. He deposited the money to the bank that pays an interest rate of 5.6% compounded annually. he wants to know his balance after 8 years?
>What does 5.6% represent?
A. Principal or initial value, P
B. Rate of interest, r
C. Number of times interest is compounded, n
D. Time, t
HIDE ANSWER
The correct answer is B. Rate of interest, r.
400
4. What is the half-life of iodine-131?
A. 32 days
B. 8 days
C. 16 days
D. 24 days
The correct answer is B. 8 days.
400
4. There are 200 vegetable plants in a garden. How many of the vegetable plants are green beans?
A. 16 B. 24
C. 28 D. 32
The correct answer is B. 24.
400
4. Determine whether the sequence is arithmetic, geometric, or neither. -6, -2, 0, 2, 4, 8
A. Geometric sequence
B.arithmetic sequence
C. Neither
The correct answer is C. Neither.
500
Lemi purchased a car for $35,000. Each year it depreciates at a rate of 5%. How much will the car be worth in 8 years?
A.$23,219.72 B. $136.72
C. $51,710.94 D.$16,710.94
The correct answer is A. 23,219.72.
500
5. My friend earned $200 from worked week ago. He deposited the money to the bank that pays an interest rate of 5.6% compounded quarterly . what will this balance going to be after 8 years.
A.312.064 B.309.272
C.1143.6 D.126.126
The correct answer is A.312.064.
500
5. The carbon decaying at certain amount of time. After the third half-life, how much of the carbon sample will left?
A. 1/4 B. 1/6
C. 1/16 D.1/8
The correct answer is D. 1/8.
500
5. Find the median, mode and range:
3, 5, 7, 9, 11, 8, 3
A. median: 7; mode: 9; range:8
B. median: 6; mode: 3; range:7
C. median: 7; mode: 3; range:8
The correct answer is C. median: 7; mode: 3; range:8.
500
5. What is the 11th term of the geometric sequence?
A. -5120 B. 97,656,250
C. 19,531,250 D. -19,531,250
The correct answer is D. -19,531,250