TSI Prep

Front

What is the value of f(-2) for the function f(x) = 4x^2 - 3x - 7?

Back

f(-2) = 15.

Front

How do you find the range of a set of numbers?

Back

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

Front

What is the solution for x in the equation x^2 - 8x = -15?

Back

One solution is x = 5.

Front

What is the value of x in the equation \sqrt{2x} = 4?

Back

x = 8.

Front

How do you calculate a 25% discount on a price of $3.80?

Back

The discounted price is $2.85.

Front

What is the formula for finding the mean of a data set?

Back

Mean = (Sum of all values) / (Number of values).

Front

What is the formula for finding the median of a data set?

Back

Median is the middle value when the numbers are arranged in order.

Front

What is the mode of a data set?

Back

Mode is the value that appears most frequently in the data set.

Front

How do you solve the equation x^2 - 8x + 15 = 0?

Back

Factor to (x - 5)(x - 3) = 0, giving solutions x = 5 and x = 3.

Front

What is the quadratic formula?

Back

x = (-b ± √(b^2 - 4ac)) / (2a).