| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.63 |
| Score | 0% | 73% |
A menswear store is having a sale: "Buy one shirt at full price and get another shirt for 15% off." If Ezra buys two shirts, each with a regular price of $15, how much will he pay for both shirts?
| $12.75 | |
| $21.00 | |
| $2.25 | |
| $27.75 |
By buying two shirts, Ezra will save $15 x \( \frac{15}{100} \) = \( \frac{$15 x 15}{100} \) = \( \frac{$225}{100} \) = $2.25 on the second shirt.
So, his total cost will be
$15.00 + ($15.00 - $2.25)
$15.00 + $12.75
$27.75
What is -2z3 - 6z3?
| 4z-6 | |
| -8z3 | |
| 8z3 | |
| -8z-3 |
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:
-2z3 - 6z3
(-2 - 6)z3
-8z3
What is the greatest common factor of 40 and 36?
| 18 | |
| 4 | |
| 25 | |
| 5 |
The factors of 40 are [1, 2, 4, 5, 8, 10, 20, 40] and the factors of 36 are [1, 2, 3, 4, 6, 9, 12, 18, 36]. They share 3 factors [1, 2, 4] making 4 the greatest factor 40 and 36 have in common.
How many 15-passenger vans will it take to drive all 71 members of the football team to an away game?
| 5 vans | |
| 12 vans | |
| 6 vans | |
| 10 vans |
Calculate the number of vans needed by dividing the number of people that need transported by the capacity of one van:
vans = \( \frac{71}{15} \) = 4\(\frac{11}{15}\)
So, it will take 4 full vans and one partially full van to transport the entire team making a total of 5 vans.
Which of the following is not an integer?
-1 |
|
\({1 \over 2}\) |
|
1 |
|
0 |
An integer is any whole number, including zero. An integer can be either positive or negative. Examples include -77, -1, 0, 55, 119.