You have a suitcase that can hold up to 23 kilograms. You are

packing clothes and want to make sure you have space left over for a Playstation you plan to buy before

your trip. If the Playstation weighs 3.75 kg, how many clothes

can you pack?

Clothes + Playstation = Total weight

x + 3.75 = 23

- 3.75 - 3.75

x = 19.25 kg

Let x = amount of clothes

John is 3 years less than twice his sister’s age. If John is 11, how old is his

sister?.

What does the variable represent?

John’s age

twice his sister’s age

3 years less than

11 = 2s - 3

Let s = sister’s age

Write equations for the following

problems in your orange notebook!

Seven more than three times a number is 31

7 + 3n = 31

The quotient of a number and 9 increased by 3

is -7

The width of a singles tennis court is 27

feet. This is one foot more than one-third

of the length.

Joanne starts with $5 in her savings account and adds $10 every week. Write an expression with a variable

that tells how much she will have in her account after n

weeks.

How much will Joanne have in her savings account after 9

weeks?