CSN MATH 120 FINAL QUESTIONS WITH VERIFIED
ANSWERS
What is 87% of 349? Round to the nearest hundredth. - Answers - multiply both
numbers. hundreths is <----.00
A camera costs $170. If the sales tax rate is 8%, what is the total price?
TO NEAREST PENNY! - Answers - percent to decimal!!
multipy total with decimal. add that sum to total(170).
On a biology test, a student got 25 questions correct but did not pass. On
a second attempt, the student got 35 questions correct. What was the
percent increase? - Answers - (2nd attempt-1st attempt)/1st amount.
multiply that decimal with 100
Allan borrowed $5800 from his father to buy a car. He repaid him after 6
months with interest of 2% per year. Find the total amount he repaid.
Round your answer to the
nearest cent. - Answers - 2% per year is 1%
percent to decimal .01
$5800x.01=58
add sum to total.
$5800+58=$5858.00
Determine the number of subsets of {mom, dad, son, daughter} - Answers - 2^(# of
subsets)
PLACE IN A SET (_,_)
6) Let U = {q, r, s, t, u, v, w, x, y, z}
A = {q, s, u, w, y} B = {q, s, y, z} C = {v, w, x, y, z}.
List the elements in the set. 6)
A "N" B - Answers - "INTERSECTION" ALL VARIABLES IN COMMON BETWEEN A &
B
(_,_)
Let U = {1, 2, 4, 5, a, b, c, d, e}. Find the complement of the set. - Answers -
"COMPLEMENT" LIST THE UNCOMMON
List the elements in the set .
Let U = {q, r, s, t, u, v, w, x, y, z}
A = {q, s, u, w, y}
, B = {q, s, y, z}
C = {v, w, x, y, z}.
A "N" (B "U" C) - Answers - COMBINE B & C, B&C IN COMMON WITH A
The average daily balance is $800 on a credit card with an APR of 9.9%
over a biling period of 30 days. What will the monthly finance charge
be? - Answers - MONTHLY FINANCE CHARGE
(ADB)*(ANNUAL PERCENTAGE RATE/365)*(#BILLING CYCLE DAYS)
TO THE NEAREST CENT/HUNDREDTHS
Find the mean of the set of data.
17, 13, 8, 19, 8, 1, 2, 12 - Answers - ADD EM ALL UP, DIVIDE BY # OF VARIABLES
Find the grade point average for a student earning the following grades.
Round answer to the nearest hundredth. - Answers - (grade points × units,credits),
total÷ units/credits total
Find the median. - Answers - Add the 2 middle numbers,
sum÷2
To get a C in history, Nandan must average 74 on four tests. Scores on the
first three tests were 65, 76, and 63. What is the lowest score that Nandan
can get on the last test and still receive a C? - Answers - "must average"-tests 1 ,2, & 3
add & or subtract those numbers.
add sum to the "must average"
Use the 68-95-99.7 rule to solve the problem.
Assume that a distribution has a mean of 20 and a standard deviation of
4. What percentage of the values in the distribution do we expect to fall
between 16 and 20? - Answers - MIDDLE IS AT 20. 16 TO 24 IS 34% 12 TO 28 IS 95%
8 TO 32 IS 99.7%
A restaurant offers a choice of 4 salads, 9 main courses, and 2 desserts.
How many possible 3-course meals are there? - Answers - multiply all choices
License plates are made using 3 letters followed by 3 digits. How many
plates can be made if repetition of letters and digits is allowed? - Answers - 26
alphabetical letters, 10 numbers
ANSWERS
What is 87% of 349? Round to the nearest hundredth. - Answers - multiply both
numbers. hundreths is <----.00
A camera costs $170. If the sales tax rate is 8%, what is the total price?
TO NEAREST PENNY! - Answers - percent to decimal!!
multipy total with decimal. add that sum to total(170).
On a biology test, a student got 25 questions correct but did not pass. On
a second attempt, the student got 35 questions correct. What was the
percent increase? - Answers - (2nd attempt-1st attempt)/1st amount.
multiply that decimal with 100
Allan borrowed $5800 from his father to buy a car. He repaid him after 6
months with interest of 2% per year. Find the total amount he repaid.
Round your answer to the
nearest cent. - Answers - 2% per year is 1%
percent to decimal .01
$5800x.01=58
add sum to total.
$5800+58=$5858.00
Determine the number of subsets of {mom, dad, son, daughter} - Answers - 2^(# of
subsets)
PLACE IN A SET (_,_)
6) Let U = {q, r, s, t, u, v, w, x, y, z}
A = {q, s, u, w, y} B = {q, s, y, z} C = {v, w, x, y, z}.
List the elements in the set. 6)
A "N" B - Answers - "INTERSECTION" ALL VARIABLES IN COMMON BETWEEN A &
B
(_,_)
Let U = {1, 2, 4, 5, a, b, c, d, e}. Find the complement of the set. - Answers -
"COMPLEMENT" LIST THE UNCOMMON
List the elements in the set .
Let U = {q, r, s, t, u, v, w, x, y, z}
A = {q, s, u, w, y}
, B = {q, s, y, z}
C = {v, w, x, y, z}.
A "N" (B "U" C) - Answers - COMBINE B & C, B&C IN COMMON WITH A
The average daily balance is $800 on a credit card with an APR of 9.9%
over a biling period of 30 days. What will the monthly finance charge
be? - Answers - MONTHLY FINANCE CHARGE
(ADB)*(ANNUAL PERCENTAGE RATE/365)*(#BILLING CYCLE DAYS)
TO THE NEAREST CENT/HUNDREDTHS
Find the mean of the set of data.
17, 13, 8, 19, 8, 1, 2, 12 - Answers - ADD EM ALL UP, DIVIDE BY # OF VARIABLES
Find the grade point average for a student earning the following grades.
Round answer to the nearest hundredth. - Answers - (grade points × units,credits),
total÷ units/credits total
Find the median. - Answers - Add the 2 middle numbers,
sum÷2
To get a C in history, Nandan must average 74 on four tests. Scores on the
first three tests were 65, 76, and 63. What is the lowest score that Nandan
can get on the last test and still receive a C? - Answers - "must average"-tests 1 ,2, & 3
add & or subtract those numbers.
add sum to the "must average"
Use the 68-95-99.7 rule to solve the problem.
Assume that a distribution has a mean of 20 and a standard deviation of
4. What percentage of the values in the distribution do we expect to fall
between 16 and 20? - Answers - MIDDLE IS AT 20. 16 TO 24 IS 34% 12 TO 28 IS 95%
8 TO 32 IS 99.7%
A restaurant offers a choice of 4 salads, 9 main courses, and 2 desserts.
How many possible 3-course meals are there? - Answers - multiply all choices
License plates are made using 3 letters followed by 3 digits. How many
plates can be made if repetition of letters and digits is allowed? - Answers - 26
alphabetical letters, 10 numbers
