7.4A and spiral

Front

What is the formula to calculate percent change?

Back

Percent Change = ((New Value - Original Value) / Original Value) * 100

Front

If a stereo originally priced at $360 is on sale for $200, what is the percent of change?

Back

44%

Front

How do you find the cost of one slice of pizza if a pizza with eight slices costs $12?

Back

Cost per slice = Total Cost / Number of Slices = $12 / 8 = $1.50

Front

What does it mean for two triangles to be similar?

Back

Two triangles are similar if their corresponding angles are equal and their corresponding sides are in proportion.

Front

Back

Front

What is the slope of a line?

Back

The slope is the ratio of the rise (change in y) to the run (change in x).

Front

How do you calculate the slope if the rise is 1 and the run is 2?

Back

Slope = Rise / Run = 1 / 2.

Front

What is the equation that represents the total cost of x pounds of cheddar cheese if it costs $4.25 per pound?

Back

y = 4.25x

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

How can you express the relationship between two similar triangles using proportions?

Back