| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.35 |
| Score | 0% | 67% |
Ezra loaned Monica $1,000 at an annual interest rate of 9%. If no payments are made, what is the total amount owed at the end of the first year?
| $1,030 | |
| $1,010 | |
| $1,020 | |
| $1,090 |
The yearly interest charged on this loan is the annual interest rate multiplied by the amount borrowed:
interest = annual interest rate x loan amount
i = (\( \frac{6}{100} \)) x $1,000
i = 0.09 x $1,000
No payments were made so the total amount due is the original amount + the accumulated interest:
total = $1,000 + $90A menswear store is having a sale: "Buy one shirt at full price and get another shirt for 5% off." If Charlie buys two shirts, each with a regular price of $41, how much will he pay for both shirts?
| $45.10 | |
| $51.25 | |
| $79.95 | |
| $59.45 |
By buying two shirts, Charlie will save $41 x \( \frac{5}{100} \) = \( \frac{$41 x 5}{100} \) = \( \frac{$205}{100} \) = $2.05 on the second shirt.
So, his total cost will be
$41.00 + ($41.00 - $2.05)
$41.00 + $38.95
$79.95
Convert 1,093,000 to scientific notation.
| 1.093 x 107 | |
| 1.093 x 105 | |
| 1.093 x 106 | |
| 0.109 x 107 |
A number in scientific notation has the format 0.000 x 10exponent. To convert to scientific notation, move the decimal point to the right or the left until the number is a decimal between 1 and 10. The exponent of the 10 is the number of places you moved the decimal point and is positive if you moved the decimal point to the left and negative if you moved it to the right:
1,093,000 in scientific notation is 1.093 x 106
What is the distance in miles of a trip that takes 2 hours at an average speed of 45 miles per hour?
| 320 miles | |
| 175 miles | |
| 100 miles | |
| 90 miles |
Average speed in miles per hour is the number of miles traveled divided by the number of hours:
speed = \( \frac{\text{distance}}{\text{time}} \)Solving for distance:
distance = \( \text{speed} \times \text{time} \)
distance = \( 45mph \times 2h \)
90 miles
If there were a total of 400 raffle tickets sold and you bought 32 tickets, what's the probability that you'll win the raffle?
| 8% | |
| 5% | |
| 2% | |
| 17% |
You have 32 out of the total of 400 raffle tickets sold so you have a (\( \frac{32}{400} \)) x 100 = \( \frac{32 \times 100}{400} \) = \( \frac{3200}{400} \) = 8% chance to win the raffle.