Answer:12.67%Step-by-step explanation:To find the percent of decrease, first, find the difference:Original amount = 4,500New amount = 3,930Difference = 4,500 - 3,930 = 570Then, divide the difference by the original amount and multiply by 100:Percent of decrease = (570 / 4,500) × 100= 0.12666666666666666667 × 100rounded to two decimal places = 12.67%So, Jane and Joseph's monthly spending decreased by approximately 12.67%.
Answer:Step-by-step explanation:The percent of decrease in her monthly spending is approximately \(12.67\%\).