Type as a rate in simplest form. \( \$ 21 \) for 12 magazines \( \$ \square \) \( \square \) magazines

To express the cost of magazines as a rate in simplest form, we start with the given information: You have \( \$21 \) for 12 magazines. To find the cost per magazine, we divide the total cost by the number of magazines: \[ \text{Cost per magazine} = \frac{21}{12} \] Next, we simplify this fraction. Both 21 and 12 can be divided by 3: \[ \frac{21 \div 3}{12 \div 3} = \frac{7}{4} \] Thus, the cost per magazine is \( \frac{7}{4} \) dollars, which can also be expressed as \( \$1.75 \) per magazine. Now, if we want to express this as a rate in the form of \( \$ \square \) for \( \square \) magazines, we can say: - For 1 magazine, the cost is \( \$1.75 \). - For 4 magazines, the cost is \( \$7 \) (since \( 4 \times 1.75 = 7 \)). - For 12 magazines, the cost is \( \$21 \) (which we already have). So, the rate in simplest form is: \[ \frac{7}{4} \text{ dollars per magazine} \] In the format you provided: \[ \$ 21 \text{ for } 12 \text{ magazines} \] \[ \$ 1.75 \text{ for } 1 \text{ magazine} \] Or simply: \[ \frac{7}{4} \text{ dollars per magazine} \]