Question

i can sell 7 cookies for 24.50. Write an equation that can be used to find c, the total cost in dollars of n boxes ofcookies.

Answer 1

Given data:

The given cost of 3 cookies is 10.50.

a)

The cost of one box of cookies is,

`\begin{gathered} 3\text{cookies}=10.5 \\ 1\text{ cookie=3.5} \end{gathered}`

Multiply 7 on both sides.

`\begin{gathered} 7\text{ cookies=7(3.5)} \\ 7\text{ cookies =24.5} \end{gathered}`

b)

The cost of n boxes of cookies is,

`c=3.5n`

Thus, the cost of n boxes is 3.5n.