| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.18 |
| Score | 0% | 64% |
Roger loaned Diane $1,500 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?
| $1,515 | |
| $1,560 | |
| $1,545 | |
| $1,635 |
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 = 0.03 x $1,500
No payments were made so the total amount due is the original amount + the accumulated interest:
total = $1,500 + $45If \(\left|a\right| = 7\), which of the following best describes a?
a = 7 |
|
a = 7 or a = -7 |
|
a = -7 |
|
none of these is correct |
The absolute value is the positive magnitude of a particular number or variable and is indicated by two vertical lines: \(\left|-5\right| = 5\). In the case of a variable absolute value (\(\left|a\right| = 5\)) the value of a can be either positive or negative (a = -5 or a = 5).
Which of these numbers is a factor of 16?
| 9 | |
| 4 | |
| 20 | |
| 15 |
The factors of a number are all positive integers that divide evenly into the number. The factors of 16 are 1, 2, 4, 8, 16.
The __________ is the smallest positive integer that is a multiple of two or more integers.
least common multiple |
|
least common factor |
|
greatest common factor |
|
absolute value |
The least common multiple (LCM) is the smallest positive integer that is a multiple of two or more integers.
Diane scored 85% on her final exam. If each question was worth 3 points and there were 240 possible points on the exam, how many questions did Diane answer correctly?
| 83 | |
| 63 | |
| 68 | |
| 76 |
Diane scored 85% on the test meaning she earned 85% of the possible points on the test. There were 240 possible points on the test so she earned 240 x 0.85 = 204 points. Each question is worth 3 points so she got \( \frac{204}{3} \) = 68 questions right.