| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.52 |
| Score | 0% | 70% |
A 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 $33, how much money will he save?
| $1.65 | |
| $14.85 | |
| $6.60 | |
| $13.20 |
By buying two shirts, Charlie will save $33 x \( \frac{5}{100} \) = \( \frac{$33 x 5}{100} \) = \( \frac{$165}{100} \) = $1.65 on the second shirt.
A factor is a positive __________ that divides evenly into a given number.
mixed number |
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improper fraction |
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fraction |
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integer |
A factor is a positive integer that divides evenly into a given number. For example, the factors of 8 are 1, 2, 4, and 8.
What is -3y3 - 9y3?
| 6y6 | |
| -12y3 | |
| 12y3 | |
| 6y-6 |
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:
-3y3 - 9y3
(-3 - 9)y3
-12y3
Which of the following is not a prime number?
5 |
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7 |
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2 |
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9 |
A prime number is an integer greater than 1 that has no factors other than 1 and itself. Examples of prime numbers include 2, 3, 5, 7, and 11.
Solve for \( \frac{4!}{6!} \)
| 6 | |
| \( \frac{1}{120} \) | |
| \( \frac{1}{9} \) | |
| \( \frac{1}{30} \) |
A factorial is the product of an integer and all the positive integers below it. To solve a fraction featuring factorials, expand the factorials and cancel out like numbers:
\( \frac{4!}{6!} \)
\( \frac{4 \times 3 \times 2 \times 1}{6 \times 5 \times 4 \times 3 \times 2 \times 1} \)
\( \frac{1}{6 \times 5} \)
\( \frac{1}{30} \)