MATH SOLVE

4 months ago

Q:
# The number f of miles a ship is from its destination x hours after starting a voyage is given by f (x) = 120 - 25x. The number f of miles a submarine is from its destination x hours after leaving port is shown in the graph belowstate the distance and length of time of each voyage.The ship traveled 120 miles in ___ hours. The submarine traveled ___ miles in 5 hours.β

Accepted Solution

A:

Answer:120 miles in 4.8 hours75 miles in 5 hoursStep-by-step explanation:Ship:The number f(x) of miles a ship is from its destination x hours after starting a voyage is given by f(x) = 120 - 25x. This means, initially the ship is 120 miles away from its destination.If the ship traveled 120 miles, then f(x)=0 (the ship will be 0 miles away from its destination) and 0 = 120 - 25x25x = 120x = 4.8 hours.Submarine:At x = 0 hours the submarine was 75 miles awayAt x = 5 hours, the submarine was 0 miles away.So, in 5 hours the submarine traveled 75 miles