Lesson 9

2

In these next problems, what number would take the place of x?

3

A weather station on the top of a mountain reports that the temperature is currently 0°C and has been falling at a constant rate of 3°C per hour. Find each temperature. Explain or show your reasoning.

a) If it continues fall at this rate, what will the temperature be:

3

After 2 hours?

3

After 5 hours?

3

After half an hour?

b) What was the temperature:

3

3 hours ago?

3

4.5 hours ago?

3

1 hour ago?

5

To make a specific hair dye, a hair stylist uses a ratio of 1 1/8 oz of red tone, 3/4 oz of gray tone, and 5/8 oz of brown tone.
a) If the stylist needs to make 20 oz of dye, how much of each dye color is needed?

5

After 2 hours?

After 5 hours?

After half an hour?

3 hours ago?

4.5 hours ago?

1 hour ago?

To make a specific hair dye, a hair stylist uses a ratio of 1 1/8 oz of red tone, 3/4 oz of gray tone, and 5/8 oz of brown tone.a) If the stylist needs to make 20 oz of dye, how much of each dye color is needed?

b) If the stylist needs to make 100 oz of dye, how much of each dye color is needed?

To make a specific hair dye, a hair stylist uses a ratio of 1 1/8 oz of red tone, 3/4 oz of gray tone, and 5/8 oz of brown tone.
a) If the stylist needs to make 20 oz of dye, how much of each dye color is needed?