What number when rounded to the nearest tenth rounds to 138,924.7

Acar travels at an average speed of 52 miles per hour. how long does it take to travel 299 miles

Here is my question! jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate.true or false?

A6 ounce bottle of dressing costs $1.56 a 14 ounce bottle costs $3.36 a 20 ounce bottle costs $5.60 which has the lowest cost per ounce