| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.70 |
| Score | 0% | 74% |
Charlie loaned Christine $300 at an annual interest rate of 3%. If no payments are made, what is the total amount owed at the end of the first year?
| $324 | |
| $312 | |
| $309 | |
| $321 |
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 $300
i = 0.03 x $300
No payments were made so the total amount due is the original amount + the accumulated interest:
total = $300 + $9Which of the following is not an integer?
\({1 \over 2}\) |
|
0 |
|
1 |
|
-1 |
An integer is any whole number, including zero. An integer can be either positive or negative. Examples include -77, -1, 0, 55, 119.
What is 8b3 + 5b3?
| -3b3 | |
| 13b3 | |
| 3b-3 | |
| -3b-3 |
To add or subtract terms with exponents, both the base and the exponent must be the same. In this case they are so add the coefficients and retain the base and exponent:
8b3 + 5b3
(8 + 5)b3
13b3
If a car travels 135 miles in 3 hours, what is the average speed?
| 45 mph | |
| 25 mph | |
| 60 mph | |
| 15 mph |
Average speed in miles per hour is the number of miles traveled divided by the number of hours:
speed = \( \frac{\text{distance}}{\text{time}} \)What is the next number in this sequence: 1, 4, 10, 19, 31, __________ ?
| 37 | |
| 47 | |
| 46 | |
| 48 |
The equation for this sequence is:
an = an-1 + 3(n - 1)
where n is the term's order in the sequence, an is the value of the term, and an-1 is the value of the term before an. This makes the next number:
a6 = a5 + 3(6 - 1)
a6 = 31 + 3(5)
a6 = 46