Irina rakes leaves for $9.75 per hour. She works 10 times per month, and each job lasts 2.25 hours. Which equation would provide the best estimate of how many dollars Irina earns each month? 9 * 10 * 2 = 180 9 * 10 * 3 = 270 10 * 10 * 2 = 200 10 * 10 * 3 = 300

For this case the real step will be given by:

(9.75) * (2.25) * (10) = $ 219,375

Therefore, the best approximation is given by:

(10) * (2) * (10) = $ 200

The difference is:

219,375 - 200 = $ 19,375

Answer:

the best estimate of how many dollars Irina earns each month is:

10 * 10 * 2 = 200