SAT Math Prep

Front

What is the formula for calculating probability?

Back

Probability = (Number of favorable outcomes) / (Total number of outcomes)

Front

If Lisa has 2 red dresses, 3 green dresses, and x blue dresses, how do you express the probability of choosing a red dress?

Back

P(Red) = 2 / (2 + 3 + x) = 0.25

Front

What is the recommended daily calcium intake for a 20-year-old?

Back

1,000 milligrams (mg)

Front

How do you set up an inequality to represent the total calcium intake from milk and juice?

Back

299m + 261j ≥ 1,000, where m is cups of milk and j is cups of juice.

Front

What is the total charge for staying x nights at a hotel that charges $99.95 per night with an 8% tax and a $5 fee?

Back

Total charge = 1.08(99.95x) + 5

Front

What does the slope of a line of best fit represent in a scatterplot?

Back

The slope represents the predicted change in the dependent variable for a one-unit change in the independent variable.

Front

How do you calculate the total cost including tax for a service?

Back

Total cost = (Service cost) * (1 + Tax rate) + Additional fees.

Front

What is the significance of a scatterplot in data analysis?

Back

A scatterplot visually represents the relationship between two variables, helping to identify trends or correlations.

Front

What does it mean if a data point is more than 3 centimeters away from the predicted value in a scatterplot?

Back

It indicates that the actual measurement significantly deviates from the prediction made by the line of best fit.

Front

How do you interpret the y-intercept of a line of best fit?

Back

The y-intercept represents the predicted value of the dependent variable when the independent variable is zero.