Final answer:
Mr. Kuyper will spend $7 on flour at Ralphs since he needs 4.9 lbs and the store charges $1 per 0.7 lbs of flour.
Step-by-step explanation:
The student is asking how much Mr. Kuyper will spend on flour if he needs 4.9 lbs and Ralphs charges a dollar per 0.7 lbs of flour. To calculate the total cost, we need to divide the total weight of the flour Mr Kuyper needs by the weight of flour per dollar charge. This is 4.9 lbs รท 0.7 lbs/dollar, which equals 7. So Mr. Kuyper will spend 7 dollars on the flour.