Percent Change and Basic Math Problems

Front

What is percent change?

Back

Percent change is a way to express a change in a quantity as a percentage of the original amount. It is calculated using the formula: ((new value - old value) / old value) x 100.

Front

How do you solve the inequality -7x + 1 ≤ 22?

Back

To solve the inequality, first subtract 1 from both sides: -7x ≤ 21. Then divide by -7 (remember to flip the inequality sign): x ≥ -3.

Front

What is the mode in a data set?

Back

The mode is the value that appears most frequently in a data set.

Front

How do you calculate probability?

Back

Probability is calculated as the number of favorable outcomes divided by the total number of possible outcomes.

Front

What is the probability of drawing a lemon from a bag of 30 candies with 3 lemons?

Back

The probability is 3/30, which simplifies to 1/10.

Front

What is the probability of choosing a letter other than 'A' from the word 'ALGEBRA'?

Back

There are 5 letters other than 'A' out of 7 total letters, so the probability is 5/7.

Front

How do you find the percentage decrease in price?

Back

To find the percentage decrease, use the formula: ((old price - new price) / old price) x 100.

Front

What is the range of a data set?

Back

The range is the difference between the maximum and minimum values in a data set.

Front

What does it mean if two data sets have the same mode?

Back

It means that both data sets have the same most frequently occurring value.

Front

What is an inequality?

Back

An inequality is a mathematical statement that shows the relationship between two expressions that are not equal, using symbols like <, >, ≤, or ≥.