| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.40 |
| Score | 0% | 68% |
A menswear store is having a sale: "Buy one shirt at full price and get another shirt for 35% off." If Damon buys two shirts, each with a regular price of $12, how much money will he save?
| $1.80 | |
| $4.20 | |
| $3.00 | |
| $2.40 |
By buying two shirts, Damon will save $12 x \( \frac{35}{100} \) = \( \frac{$12 x 35}{100} \) = \( \frac{$420}{100} \) = $4.20 on the second shirt.
4! = ?
3 x 2 x 1 |
|
5 x 4 x 3 x 2 x 1 |
|
4 x 3 x 2 x 1 |
|
4 x 3 |
A factorial has the form n! and is the product of the integer (n) and all the positive integers below it. For example, 5! = 5 x 4 x 3 x 2 x 1 = 120.
Simplify \( \sqrt{27} \)
| 3\( \sqrt{3} \) | |
| 3\( \sqrt{6} \) | |
| 5\( \sqrt{6} \) | |
| 2\( \sqrt{3} \) |
To simplify a radical, factor out the perfect squares:
\( \sqrt{27} \)
\( \sqrt{9 \times 3} \)
\( \sqrt{3^2 \times 3} \)
3\( \sqrt{3} \)
| 1 | |
| 8.1 | |
| 0.6 | |
| 6.4 |
1
What is the next number in this sequence: 1, 3, 7, 13, 21, __________ ?
| 39 | |
| 26 | |
| 31 | |
| 30 |
The equation for this sequence is:
an = an-1 + 2(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 + 2(6 - 1)
a6 = 21 + 2(5)
a6 = 31