| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.66 |
| Score | 0% | 73% |
Damon loaned Monica $1,400 at an annual interest rate of 2%. If no payments are made, what is the total amount owed at the end of the first year?
| $1,428 | |
| $1,526 | |
| $1,484 | |
| $1,470 |
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 $1,400
i = 0.02 x $1,400
No payments were made so the total amount due is the original amount + the accumulated interest:
total = $1,400 + $28What is -2z7 - 5z7?
| 7z7 | |
| 3z14 | |
| -7z7 | |
| 3z49 |
To add or subtract terms with exponents, both the base and the exponent must be the same. In this case they are so subtract the coefficients and retain the base and exponent:
-2z7 - 5z7
(-2 - 5)z7
-7z7
What is \( \frac{3}{8} \) x \( \frac{3}{8} \)?
| 1\(\frac{1}{8}\) | |
| \(\frac{9}{64}\) | |
| \(\frac{8}{63}\) | |
| \(\frac{1}{9}\) |
To multiply fractions, multiply the numerators together and then multiply the denominators together:
\( \frac{3}{8} \) x \( \frac{3}{8} \) = \( \frac{3 x 3}{8 x 8} \) = \( \frac{9}{64} \) = \(\frac{9}{64}\)
If a car travels 360 miles in 9 hours, what is the average speed?
| 40 mph | |
| 25 mph | |
| 75 mph | |
| 35 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 5y6 + y6?
| 6y36 | |
| 6y12 | |
| 6y6 | |
| -4y-6 |
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:
5y6 + 1y6
(5 + 1)y6
6y6