Percentages
What is 2/5 expressed as a percent?
40%
A jacket cost $80 and sale tax is 7%. What is the total cost?
85.60
Which investment typically has the highest long-term growth?
Stocks
Use I=PRT. Find the interest on $600 at 5% for 3 years.
90
List the set: odd integers between 10 and 20.
{11, 13, 15, 17, 19}
What is 0.59 expressed as a percent?
59%
A $120 item is on sale for 20% off, then taxed at 5%. What is the final price?
100.80
Simple Interest is the interest earned or owed solely on the money you borrow or invest.
True
Find the total amount for 800 at 4% simple interest for 2 years.
864
Are the following sets equal? A = {2,4,6}, B = {6,4,2}
Yes
What is 3% of 200?
6
Sara just graduated from high school. She received money as a graduation gift, and she wants to put it away and not touch it for a very long time. Which of the following tends to have the highest growth over a long period of time?
Stocks
What does the variable P represent in interest formulas?
Principal
Using A=P(1+r/n)^nt. Find the balance of an account after 6 months with a 3.96% interest rate on the principal of $7,000, compounding quarterly.
7139.30
Determine whether A ⊆ B. A = {1,2,3}, B = {1,2,3,4,5}.
Yes
What is 75% of 6,000?
4,500
Suppose the local sales tax rate is 6% and you purchase a car for $72,000.
How much is the car's total price?
76,320
Which type of interest earns interest on both the principal and previously earned interest?
Compound Interest
Using A=P(1+r/n)^nt. Find the balance after 6 years on an account with 3.5% interest with a $4,000 principal compounded monthly.
4933.43
Choosing 3 students from 10 (order doesn’t matter) is:
Permutation
What is 0.0655 as a percent?
6.55%
You and your roommate want matching bedspreads for your dorm room. Your roommate finds a set that is $100 for both, and they have a coupon for 10% off. The local sales tax is 8%. If you give your roommate $50, is that enough to cover your half?
Yes, $50 will cover it, but they owe me some change.
An investment earns more money over time with compound interest than simple interest because:
Interest is added to the principal each period.
A 5,000 investment earns 6% interest compounded monthly. What is the balance after 4 years?
6352.45
Simplify 8!/6!
56