to mail an envelope first class the u s post office charges 40 cents for the first ounce and 25 cents per ounce for
To mail an envelope first class, the U.S. Post Office charges 40 cents for the first ounce and 25 cents per ounce for each additional ounce. Use an inequality to find the number of whole ounces that can be mailed for no more than $4.00. A. [14.4, ∞) B. (-∞, 14.4] C. [9.375, ∞) D. (-∞, 9.375]