Final answer:
Without growth rate data for the daylily, we cannot predict its height for April 29. The mathematics conversion problems can be solved by using known relationships, such as 1 yard equals 3 feet, and applying the appropriate scale factors in the case of map measurements. Therefore, the correct option is A.
Step-by-step explanation:
To answer the student's question about predicting the height of Marie's daylily on April 29, we first need to understand that this is a prediction based on growth patterns. However, the information provided doesn't include previous heights or a rate of growth, which are necessary to make a prediction. Without this critical data, we cannot accurately predict the height of the daylily. Moving on to the provided reference information, these are classical conversion problems in mathematics. For example, to determine how many feet are in four yards (question 7), you should know that one yard equals three feet. Therefore:
4 yards x 3 feet/yard = 12 feet
For question 12, if two buildings are 5 inches apart on a map and the scale is 1/4 inch = 1 mile, then the actual distance is:
5 inches x (1 mile / 1/4 inch) = 5 x 4 miles = 20 miles
For question 13, to find the actual length of the classroom when 2.5 inches on the floor plan represent 5 feet, with the scale being 12 inches = 5 feet, we use the following relationship:
2.5 inches on the plan / 12 inches = Actual length / 5 feet
Then solving for the actual length:
Actual length = 2.5 inches / 12 inches x 5 feet = 1.04167 feet
To convert the answer to inches, multiply by 12:
1.04167 feet x 12 inches/foot = 12.5 inches
Therefore, the actual length of the classroom is 12.5 inches.
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