| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.69 |
| Score | 0% | 74% |
Which of the following is a mixed number?
\(1 {2 \over 5} \) |
|
\({a \over 5} \) |
|
\({7 \over 5} \) |
|
\({5 \over 7} \) |
A rational number (or fraction) is represented as a ratio between two integers, a and b, and has the form \({a \over b}\) where a is the numerator and b is the denominator. An improper fraction (\({5 \over 3} \)) has a numerator with a greater absolute value than the denominator and can be converted into a mixed number (\(1 {2 \over 3} \)) which has a whole number part and a fractional part.
Convert c-4 to remove the negative exponent.
| \( \frac{4}{c} \) | |
| \( \frac{-4}{c} \) | |
| \( \frac{1}{c^4} \) | |
| \( \frac{-1}{c^{-4}} \) |
To convert a negative exponent to a positive exponent, calculate the positive exponent then take the reciprocal.
What is (a5)5?
| a0 | |
| a25 | |
| 5a5 | |
| a10 |
To raise a term with an exponent to another exponent, retain the base and multiply the exponents:
(a5)5What is c7 + 6c7?
| 7c7 | |
| 5c-7 | |
| -5c-7 | |
| 7c14 |
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:
1c7 + 6c7
(1 + 6)c7
7c7
Damon loaned Jennifer $1,500 at an annual interest rate of 1%. If no payments are made, what is the total amount owed at the end of the first year?
| $1,515 | |
| $1,545 | |
| $1,620 | |
| $1,605 |
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 $1,500
i = 0.01 x $1,500
No payments were made so the total amount due is the original amount + the accumulated interest:
total = $1,500 + $15