How many sig figs are in 3?

Silpilify the expression -2b -6 plus 3b -2? What is 6922251 times 8 equals? The sum of two numbers is 60 and the difference is 22 what are the numbers? Why is it sometimes easier to do the sum in the other order? How do you convert 7.222 km to miles? what is the 3 cube roots of 1? What is the circumfrence of a circle if the diameter is 10.5 cm? What is the percent change of 72 to 90? What is the probability of rolling a ten with a pair of number cubes? If AB equals 10 and AC equals 18 and DE equals 5 and DF equals 9 and EF equals 11 what is the length of BC? Why did sails shaped like triangles help European sailors? What is a primary colour plus a secondary color called? How many months are cold? When multiplying two factors that each have one decimal place place the decimal point in the product how many places to the left? What is the value in this number 0.020? What is the average number of pi? What is y in 8x plus 2y equals 10? Does a camera has a length of more or less than one centimeter? What is 12(4c plus 34)? What is 16 h-125?