Exploring Ratio, Proportion, and Percent

In this chapter, students learn to express ratios and rates
as fractions and to solve proportions by using cross
products. Then, using their knowledge of ratios, students
find actual lengths from scale drawings. Students explore
the relationship among fractions, decimals, and percents
as well as find the percent of a number. Students also
learn to solve problems by drawing a diagram. Continue reading “Exploring Ratio, Proportion, and Percent”

Exponential Functions

There are two types of exponential functions: .exponential growth and exponential decay The base of an exponential growth function is
a number greater than one. The base of an exponential decay function is a number between 0 and 1.

Exponential functions are frequently used to model the growth or decay of a
population. You can use the y-intercept and one other point on the graph to write the equation of an exponential function. Continue reading “Exponential Functions”