| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.83 |
| Score | 0% | 77% |
If a car travels 45 miles in 3 hours, what is the average speed?
| 25 mph | |
| 40 mph | |
| 15 mph | |
| 45 mph |
Average speed in miles per hour is the number of miles traveled divided by the number of hours:
speed = \( \frac{\text{distance}}{\text{time}} \)What is the next number in this sequence: 1, 5, 13, 25, 41, __________ ?
| 70 | |
| 58 | |
| 61 | |
| 66 |
The equation for this sequence is:
an = an-1 + 4(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 + 4(6 - 1)
a6 = 41 + 4(5)
a6 = 61
Charlie loaned Charlie $1,200 at an annual interest rate of 4%. If no payments are made, what is the interest owed on this loan at the end of the first year?
| $135 | |
| $18 | |
| $36 | |
| $48 |
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 $1,200
i = 0.04 x $1,200
i = $48
How many hours does it take a car to travel 150 miles at an average speed of 30 miles per hour?
| 7 hours | |
| 4 hours | |
| 5 hours | |
| 2 hours |
Average speed in miles per hour is the number of miles traveled divided by the number of hours:
speed = \( \frac{\text{distance}}{\text{time}} \)Solving for time:
time = \( \frac{\text{distance}}{\text{speed}} \)
time = \( \frac{150mi}{30mph} \)
5 hours
A menswear store is having a sale: "Buy one shirt at full price and get another shirt for 30% off." If Bob buys two shirts, each with a regular price of $37, how much money will he save?
| $11.10 | |
| $12.95 | |
| $14.80 | |
| $16.65 |
By buying two shirts, Bob will save $37 x \( \frac{30}{100} \) = \( \frac{$37 x 30}{100} \) = \( \frac{$1110}{100} \) = $11.10 on the second shirt.