A store sells black ink pens for $5 and red ink pens for $4. John wishes to buy 20 pens but doesn't wish to spend more than $92. Writing r for the number of red pens, form an inequality to show this information

Step-by-step explanation:

Let b represent the number of black

ink pens that John wants to buy.

Let r represent the number of red

ink pens that John wants to buy.

John wishes to buy 20 pens. This would be expressed as

b + r = 20

The store sells black ink pens for $5 and red ink pens for $4. John doesn't wish to spend more than $92. The inequality to show this information would be expressed as

5b + 4r ≤ 92