Final answer:
To find the number of words in Mr. Grant's ad, the total cost ($8.40) is divided by the cost per word ($0.08), resulting in 105 words, with the correct answer being option B.
Step-by-step explanation:
The student asked how many words Mr. Grant's newspaper ad was if it cost $8.40 with a rate of $0.08 per word. To find the number of words, we divide the total cost of the ad by the cost per word. So we have:
- Total cost of the ad: $8.40
- Cost per word: $0.08
- Number of words: Total cost ($8.40) divided by cost per word ($0.08)
This gives us $8.40 / $0.08 which equals 105 words. Therefore, the correct answer is B) 105.