Final answer:
The price of one issue at the news stand is $8.33.
Step-by-step explanation:
To find the price of one issue at the news stand, we need to first calculate the original price of the subscription before the discount. We know that the subscription price of 12 issues is $29.99 and represents a saving of 70%. So, the original price of 12 issues can be calculated by dividing the subscription price by (1 - 0.70). This comes out to be $99.97.
Next, we can find the price of one issue at the news stand by dividing the original price of 12 issues by 12. So, the price of one issue at the news stand is $99.97 / 12 = $8.33 (rounded to the nearest cent).