WU- May 22

Front

What is the formula for exponential decay?

Back

y = a(1 - r)^t, where a is the initial amount, r is the decay rate, and t is time.

Front

How do you calculate the percentage of a quantity that evaporates in exponential decay?

Back

Subtract the remaining percentage from 100%. For example, if 78% remains, then 100% - 78% = 22% evaporates.

Front

What is the solution to the equation -2(-7x + 1) = 5x + 34?

Back

x = 4.

Front

What does a correlation coefficient of r = 0.32 indicate about the data?

Back

It indicates a weak positive correlation.

Front

What happens to the mean when a new higher value is added to a data set?

Back

The mean increases.

Front

What is the definition of median in a data set?

Back

The median is the middle value when the data points are arranged in ascending order.

Front

What is standard deviation?

Back

Standard deviation measures the amount of variation or dispersion in a set of values.

Front

What is the interquartile range (IQR)?

Back

The IQR is the difference between the first quartile (Q1) and the third quartile (Q3) in a data set.

Front

How do you graph a system of inequalities?

Back

Graph each inequality on the same coordinate plane and identify the region where the solutions overlap.

Front

What is the definition of a linear equation?

Back

A linear equation is an equation that makes a straight line when graphed, typically in the form y = mx + b.