| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.70 |
| Score | 0% | 74% |
Find the average of the following numbers: 14, 6, 11, 9.
| 5 | |
| 10 | |
| 12 | |
| 7 |
To find the average of these 4 numbers add them together then divide by 4:
\( \frac{14 + 6 + 11 + 9}{4} \) = \( \frac{40}{4} \) = 10
Bob loaned Alex $600 at an annual interest rate of 2%. If no payments are made, what is the interest owed on this loan at the end of the first year?
| $18 | |
| $5 | |
| $12 | |
| $54 |
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 $600
i = 0.02 x $600
i = $12
How many 13-passenger vans will it take to drive all 84 members of the football team to an away game?
| 13 vans | |
| 7 vans | |
| 6 vans | |
| 8 vans |
Calculate the number of vans needed by dividing the number of people that need transported by the capacity of one van:
vans = \( \frac{84}{13} \) = 6\(\frac{6}{13}\)
So, it will take 6 full vans and one partially full van to transport the entire team making a total of 7 vans.
What is -9y6 - y6?
| 10y-6 | |
| -8y36 | |
| -10y6 | |
| -8y6 |
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:
-9y6 - 1y6
(-9 - 1)y6
-10y6
A menswear store is having a sale: "Buy one shirt at full price and get another shirt for 5% off." If Alex buys two shirts, each with a regular price of $27, how much money will he save?
| $1.35 | |
| $9.45 | |
| $5.40 | |
| $10.80 |
By buying two shirts, Alex will save $27 x \( \frac{5}{100} \) = \( \frac{$27 x 5}{100} \) = \( \frac{$135}{100} \) = $1.35 on the second shirt.