Final answer:
To find the difference in charges between Mrs. Jones and Mr. Smith for mowing lawns, calculate the total amount charged by Ryan for each lawn and subtract the amount charged for Mr. Smith from the amount charged for Mrs. Jones. The difference in charges is $22.50.
Step-by-step explanation:
The question asks how much more Ryan would charge Mrs. Jones than Mr. Smith for mowing lawns.
To find the answer, we need to calculate the total amount charged by Ryan for each lawn and then subtract the amount charged for Mr. Smith from the amount charged for Mrs. Jones.
For Mr. Smith's lawn, the given information is that it takes 2 hours to mow. So, the total amount charged would be y = 15 * 2 = $30.
For Mrs. Jones' lawn, it takes 3.5 hours to mow. So, the total amount charged would be -
y = 15 * 3.5 = $52.50.
To find the difference in charges between Mrs. Jones and Mr. Smith, we subtract $30 from $52.50.
The difference is $22.50.