How do you spell out 5.3 billion?

Is it true that pi is equal to the circumference of pi divided by the diameter? What is the length of an Alsin and how long is 300 Alsins? Which integer 4 is less than -1? How can i Describe a real world situation where it is reasonable to have a negative number included in the domain or range? How many numbers between 1 and 100 use 6? What is the roman number for 5000? What does b ba back mean? How do you write out 1000000 in English? Why when you add 2 odd numbers together you get an even number as the sum? Emily can type 40 words per minute if her science report has 800 words how much time Emily need to type the report? What is the 10th term of 5 8 11 14 17? What is 126945 to the nearest thousand? How do you write five hundred and twenty eight thousandth in decimal point? How far does a train travel at 150 km in 3.5 hours? What is 1 pound money in a decimal? In a study of caregivers what would be the variable? How do you write six hundred ninety thousandths? What is the EXACT value of -2 plus pi divided by 2 No calculator estimates? What is a definition for the word circumspect? How do you solve 5x plus 3 equals 4x?