| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.85 |
| Score | 0% | 57% |
Find the average of the following numbers: 13, 5, 11, 7.
| 9 | |
| 10 | |
| 6 | |
| 8 |
To find the average of these 4 numbers add them together then divide by 4:
\( \frac{13 + 5 + 11 + 7}{4} \) = \( \frac{36}{4} \) = 9
Cooks are needed to prepare for a large party. Each cook can bake either 2 large cakes or 10 small cakes per hour. The kitchen is available for 4 hours and 33 large cakes and 260 small cakes need to be baked.
How many cooks are required to bake the required number of cakes during the time the kitchen is available?
| 12 | |
| 9 | |
| 14 | |
| 6 |
If a single cook can bake 2 large cakes per hour and the kitchen is available for 4 hours, a single cook can bake 2 x 4 = 8 large cakes during that time. 33 large cakes are needed for the party so \( \frac{33}{8} \) = 4\(\frac{1}{8}\) cooks are needed to bake the required number of large cakes.
If a single cook can bake 10 small cakes per hour and the kitchen is available for 4 hours, a single cook can bake 10 x 4 = 40 small cakes during that time. 260 small cakes are needed for the party so \( \frac{260}{40} \) = 6\(\frac{1}{2}\) cooks are needed to bake the required number of small cakes.
Because you can't employ a fractional cook, round the number of cooks needed for each type of cake up to the next whole number resulting in 5 + 7 = 12 cooks.
How many 2 gallon cans worth of fuel would you need to pour into an empty 16 gallon tank to fill it exactly halfway?
| 7 | |
| 5 | |
| 4 | |
| 2 |
To fill a 16 gallon tank exactly halfway you'll need 8 gallons of fuel. Each fuel can holds 2 gallons so:
cans = \( \frac{8 \text{ gallons}}{2 \text{ gallons}} \) = 4
Which of the following statements about exponents is false?
all of these are false |
|
b1 = b |
|
b0 = 1 |
|
b1 = 1 |
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).
Ezra loaned Damon $1,000 at an annual interest rate of 8%. If no payments are made, what is the interest owed on this loan at the end of the first year?
| $40 | |
| $8 | |
| $70 | |
| $80 |
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 $1,000
i = 0.08 x $1,000
i = $80