MP3 - Classwork #2

Front

What is the formula to calculate the percentage of a part compared to a whole?

Back

Percentage = (Part / Whole) * 100

Front

If 45 out of 100 surveyed adults preferred sports cars, what percentage is that?

Back

45%

Front

What is the definition of a function in mathematics?

Back

A function is a relation that assigns exactly one output for each input.

Front

Evaluate the function K(x) = 2x^2 - 5x + 3 at x = -3.

Back

K(-3) = 36

Front

What is the process to solve the equation 3(x - 8) + 4x = 8x + 4?

Back

Combine like terms and isolate x to find x = -28.

Front

What does it mean if a survey result shows that 24% of boys chose a specific option?

Back

It means that out of 100 boys surveyed, 24 boys preferred that option.

Front

How do you round a percentage to the nearest whole number?

Back

Look at the decimal; if it's 0.5 or higher, round up; if it's less than 0.5, round down.

Front

What is the significance of a survey in data collection?

Back

Surveys gather information from a sample to infer preferences or opinions of a larger population.

Front

What is the formula for calculating the average of a set of numbers?

Back

Average = (Sum of all values) / (Number of values)

Front

If 39.6% of students chose soccer as their favorite sport, how many students chose soccer if 200 students were surveyed?

Back

79.2 students, which rounds to 79 students.