(63xto the third power +45x to the second power + (7x+5)

What is the volume of a rectangular prism if the length is 10.4 mm the width is 5 mm in the height is 8 mm

What is the measure of angle x? a.101 b.158 c.44 d.79

Me with this assignment ! i only partially understand, so explain. also it's a work sample. at the championship bike race, steve and paula were fighting for first place. steve was 175 feet ahead of paula and had only 300 feet left to go. he was very tired and was going only 9 feet per second. paula was desperate to catch up and was going 15 feet per second. who won the bike race and by how far did she/he win?