| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.90 |
| Score | 0% | 58% |
A menswear store is having a sale: "Buy one shirt at full price and get another shirt for 35% off." If Bob buys two shirts, each with a regular price of $40, how much will he pay for both shirts?
| $66.00 | |
| $26.00 | |
| $58.00 | |
| $50.00 |
By buying two shirts, Bob will save $40 x \( \frac{35}{100} \) = \( \frac{$40 x 35}{100} \) = \( \frac{$1400}{100} \) = $14.00 on the second shirt.
So, his total cost will be
$40.00 + ($40.00 - $14.00)
$40.00 + $26.00
$66.00
Which of the following is not an integer?
0 |
|
\({1 \over 2}\) |
|
-1 |
|
1 |
An integer is any whole number, including zero. An integer can be either positive or negative. Examples include -77, -1, 0, 55, 119.
Which of the following statements about exponents is false?
b1 = 1 |
|
b1 = b |
|
b0 = 1 |
|
all of these are false |
A number with an exponent (be) consists of a base (b) raised to a power (e). The exponent indicates the number of times that the base is multiplied by itself. A base with an exponent of 1 equals the base (b1 = b) and a base with an exponent of 0 equals 1 ( (b0 = 1).
If the ratio of home fans to visiting fans in a crowd is 2:1 and all 49,000 seats in a stadium are filled, how many home fans are in attendance?
| 31,667 | |
| 24,800 | |
| 35,833 | |
| 32,667 |
A ratio of 2:1 means that there are 2 home fans for every one visiting fan. So, of every 3 fans, 2 are home fans and \( \frac{2}{3} \) of every fan in the stadium is a home fan:
49,000 fans x \( \frac{2}{3} \) = \( \frac{98000}{3} \) = 32,667 fans.
The total water usage for a city is 25,000 gallons each day. Of that total, 30% is for personal use and 51% is for industrial use. How many more gallons of water each day is consumed for industrial use over personal use?
| 5,250 | |
| 600 | |
| 10,350 | |
| 2,600 |
51% of the water consumption is industrial use and 30% is personal use so (51% - 30%) = 21% more water is used for industrial purposes. 25,000 gallons are consumed daily so industry consumes \( \frac{21}{100} \) x 25,000 gallons = 5,250 gallons.