Answer:
Let x be the Fernando family's monthly budget. We know that $800 is 15% of their monthly budget, so we can write an equation:
0.15x = $800
To solve for x, we can divide both sides by 0.15:
x = $800 ÷ 0.15
x = $5,333.33 (rounded to the nearest cent)
Therefore, the Fernando family's monthly budget is approximately $5,333.33.