Round 102.85 to the nearest tenth.

What is the answer to this question? i'm a bit stumped. also how do i do it? 5(x - 4) = 2(x + 5)

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?

Afrequency table of grades has five classes (a, b, c, d, f) with frequencies of 3, 13, 14, 5, and 3 respectively. using percentages, what are the relative frequencies of the five classes?