You are walking up to the 5th floor of a building from the 2nd floor. The number of stairs climbed S after t seconds of climbing is given by S = 3t+20. How many seconds did it take you to get up to the 5th floor if the 5th floor is 50 steps up?

Add 1/7 + -1/7 your answer should be reduced to its smallest form and should not be an improper fraction

What is the number 321,000,000 in scientific notation? also what is the number? ?

Will give brainliest plz hurry lexie surveyed 4 teenagers to find out approximately how many hours, per week, they read for fun, and how many siblings they have. brooke said she reads about 10 h a week for fun, and that she has 5 siblings. celia said she has 1 brother and 1 sister and reads for fun about 3 h each week. henry said he has 2 brothers and reads for fun about 30 min each week. jude said he doesn't read for fun and has 3 brothers and 3 sisters. use this information to complete the data table. express your answers as whole numbers or decimals. name hours of fun number of siblings brooke celia __ henry jude