LT5B Assessment

This table shows a linear relationship betwen the age of a newborn baby (in weeks) and their weight (in pounds).

Selet all the TRUE statements.

• The weight of the baby increases at a constant rate of 2 lbs every week.

• The weight of the baby increases at a constant rate of 1 lbs every week.

• The weight of the baby increases at a constant rate of 1/2 lbs every week.

• Age is a function of weight.

• Weight is a function of age.

Two car services offer to pick you up and take you to your destination. * Service A charges 40 cents to pick up and 30 cents for each mile.

matches ​ ​ (a)  

* Service B charges $1.10 to pick you up and charges C cents for each mile.

matches ​ (b)  

• line M
• Line L

For service B, is the additional charge per mile greater than or less than 30 cents per mile of the trip? ​ ​ (a)   ​

• less than
• greater than
• equal to

For service B, is the additional charge per mile greater than or less than 30 cents per mile of the trip?

EXPLAIN your thinking.

The volume, V, of liquid in a container after t seconds can be represented by the equation

V = -25t + 1250  

a) Is the volume of the liquid in the container increasing or decreasing?

​ _​ ​ (a)   ​

• decreasing
• increasing

The volume, V, of liquid in a container after t seconds can be represented by the equation

V = -25t + 1250  

a) Is the volume of the liquid in the container increasing or decreasing?

EXPLAIN your thinking.

The volume, V, of liquid in a container after t seconds can be represented by the equation

V = -25t + 1250

b) How much liquid is in the container to start?

​ (a)  

• 1250
• -25

The volume, V, of liquid in a container after t seconds can be represented by the equation

V = -25t + 1250

b) How much liquid is in the container to start?

​ EXPLAIN how you know.