A train travels at a constant speed of 86 kilometers per hour. How far can it travel in 4 hours? PLZ HELP ME:)

Which expression is equivalent to? assume x > 0 and y > 0.

If given an equation of a line such as -1/2x+6 how would you create an equation of a line parallel and perpendicula to this line that goes through another point such as (4,10)

Suzanne began a trip with 18 1/2 gallons of gas in the gas tank of her car if she hughes 17 3/4 gallons on the trip how many gallons does she have left once she finish the trip