| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.12 |
| Score | 0% | 62% |
Which of the following statements about exponents is false?
b1 = b |
|
all of these are false |
|
b1 = 1 |
|
b0 = 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).
Monica scored 90% on her final exam. If each question was worth 3 points and there were 90 possible points on the exam, how many questions did Monica answer correctly?
| 23 | |
| 27 | |
| 28 | |
| 29 |
Monica scored 90% on the test meaning she earned 90% of the possible points on the test. There were 90 possible points on the test so she earned 90 x 0.9 = 81 points. Each question is worth 3 points so she got \( \frac{81}{3} \) = 27 questions right.
A tiger in a zoo has consumed 25 pounds of food in 5 days. If the tiger continues to eat at the same rate, in how many more days will its total food consumtion be 60 pounds?
| 7 | |
| 2 | |
| 4 | |
| 1 |
If the tiger has consumed 25 pounds of food in 5 days that's \( \frac{25}{5} \) = 5 pounds of food per day. The tiger needs to consume 60 - 25 = 35 more pounds of food to reach 60 pounds total. At 5 pounds of food per day that's \( \frac{35}{5} \) = 7 more days.
A menswear store is having a sale: "Buy one shirt at full price and get another shirt for 35% off." If Monty buys two shirts, each with a regular price of $38, how much money will he save?
| $11.40 | |
| $1.90 | |
| $13.30 | |
| $9.50 |
By buying two shirts, Monty will save $38 x \( \frac{35}{100} \) = \( \frac{$38 x 35}{100} \) = \( \frac{$1330}{100} \) = $13.30 on the second shirt.
Which of the following is a mixed number?
\(1 {2 \over 5} \) |
|
\({7 \over 5} \) |
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\({5 \over 7} \) |
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\({a \over 5} \) |
A rational number (or fraction) is represented as a ratio between two integers, a and b, and has the form \({a \over b}\) where a is the numerator and b is the denominator. An improper fraction (\({5 \over 3} \)) has a numerator with a greater absolute value than the denominator and can be converted into a mixed number (\(1 {2 \over 3} \)) which has a whole number part and a fractional part.