Modeling Expressions

Modeling Expressions

Real world problems

REVIEW

EXAMPLE 1

Layla earns $400 per week plus $15 per customer she signs up. Let "C" represent the number of customers. Write an expression to show how much she earns in a week.


Layla automatically earns $400 that week (this is her constant)
She earns $15 per customer (15 times the number of customers)

Expression: 15c + 400

Therefore is she signs 3 customers, we can easily plug that in for the value of c.

Example 2

Jessica babysits for $10 per hour


Jessica's rate can be described as 10h

Example

Jordan has 3 fewer UK tshirts than Ted

Jordan's amount of tshirts can be described as 

t - 3 with t standing for the amount that Ted has.

Multiple Choice

A Great Dane is 40 times the size of a mini poodle. Write an expression to describe this

• p + 40

• 40p

• 40/p

• d - 40

Multiple Choice

Your age 12 years from now.

• 12y

• y + 12

• y - 12

• y/12

Multiple Choice

TJ has 6 more than triple the amount of cupcakes that Carter has.

• c + 6

• 3c + 6

• 18c

• 3c - 6

Multiple Choice

Mason has 2 more than 1/2 as many legos as Chase.

• c + 2

• c + 1/2 + 2

• 1/2c + 2

• 1/2c - 2

Multiple Choice

Chelsee has 12 less pineapples than Sam.

• s - 12

• 12 - s

• s/12

• 12/s