Question

Ivan buys candy that costs $\$7$ per pound. He will buy at most $9$ pounds of candy. What are the possible amounts he will spend on candy?

Use $c$ for the amount (in dollars) Ivan will spend on candy. Write your answer as an inequality solved for $c$.

Answer 1

Compute the inequlity for $c$:

Let the amount of money needed by Ivan as $\$c$.

Given that cost of $1$ pound of candy is $\$7$.

Ivan can buy at most $9$ pounds of candy.

This implies that maximum amount that can be spent is $\$7\times 9$.

$c$ is less than or equal to $7\times 9$.
$$\begin{gathered} 7\times 9\ge c \\ \Rightarrow 63\ge c \\ \therefore c\le 63 \end{gathered}$$

Hence, the answer is $c\le 63$.