12.9 Weekly Review

Front

What is a scale drawing?

Back

A scale drawing is a representation of an object or space that is proportionally reduced or enlarged to fit on paper, using a specific ratio to represent actual dimensions.

Front

How do you determine the scale of a drawing?

Back

The scale of a drawing can be determined by comparing the dimensions of the drawing to the actual dimensions of the object it represents.

Front

If 1 inch on a drawing represents 5 feet in reality, what is the scale?

Back

1 in = 5 ft.

Front

What is the actual size of an object if a scale drawing measures 12.5 cm by 10 cm and the scale is 1 cm = 4 m?

Back

The actual size is 50 m by 40 m.

Front

What point does the graph of any proportional relationship pass through?

Back

(0, 0) - This indicates that when one variable is zero, the other variable is also zero.

Front

What is the formula to find depth if descending at a constant rate?

Back

Depth = rate of descent × time.

Front

If Gina descends 20.4 meters in 4 minutes, what is her rate of descent?

Back

5.1 meters per minute.

Front

What does a 10% discount mean in terms of payment?

Back

A 10% discount means you pay 90% of the original price.

Front

How do you express the total cost after a discount?

Back

Total cost = (original price × (1 - discount rate)) + additional costs.

Front

What is the expression for the total cost of flutes and clarinets after a 10% discount?

Back

0.9f + 240, where f is the original cost of flutes.