Question

Joe goes to the store to buy milk that cost x + $3, bread that cost x + $2.25, and 3 bags of potato chips that cost x + $1.50 each. Write an equivalent expression to represent what he spent.

Answer 1

Given:

Milk cost = x + $3,

Bread cost = x + $2.25,

3 bags of potato chips cost = x + $1.50 each.

To find:

The equivalent expression to represent what he spent.

Solution:

1 bag of potato chips cost = x + $1.50

3 bag of potato chips cost = 3(x + $1.50).

Total cost = Milk cost + Bread cost + Cost of 3 bags of potato chips

`\text{Total cost}=(x+\$3)+(x+\$2.25)+3(x+\$1.50)`

`\text{Total cost}=x+\$3+x+\$2.25+3x+\$4.50`

`\text{Total cost}=(x+x+3x)+\$(3+2.25+4.50)`

`\text{Total cost}=5x+\$9.75`

Therefore, the required expression is 5x+$9.75.